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Washington County, Arkansas, USAi
Regional Level Types
Washington CountyCounty
ArkansasState
USACountry

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PhotosMapsSearch
Type:
Largest Settlements:
PlacePopulation
Fayetteville82,830 (2017)
Springdale77,859 (2017)
Farmington6,701 (2017)
Prairie Grove5,186 (2017)
Johnson3,634 (2017)
Elkins2,946 (2017)
Mindat Locality ID:
187551
Long-form identifier:
1:2:187551:8
GUID (UUID V4):
78f89a77-0877-4701-855b-2957a48690ed
Other Languages:
French:
Comté de Washington, Arkansas, États-Unis
German:
Washington County, Arkansas, Vereinigte Staaten
Italian:
Contea di Washington, Arkansas, Stati Uniti d'America
Russian:
Вашингтон, Арканзас, Соединённые Штаты Америки
Simplified Chinese:
華盛頓縣, 阿肯色州, 美国
Spanish:
Condado de Washington, Arkansas, Estados Unidos
Albanian:
Washington County, Arkansas, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة واشنطن, أركنساس, الولايات المتحدة
Armenian:
Վաշինգտոնի շրջան, Արկանզաս, Ամերիկայի Միացյալ Նահանգներ
Basque:
Washington konderria, Arkansas
Bavarian:
Washington County, Arkansas, Vaoanigte Stootn
Bishnupriya Manipuri:
ৱাশিংটন কাউন্টি, আরকান্‌সাস, তিলপারাষ্ট্র
Bulgarian:
Вашингтон, Арканзас, Съединени американски щати
Cebuano:
Washington County, Arkansas
Czech:
Washington County, Arkansas, Spojené státy americké
Dutch:
Washington County, Arkansas, Verenigde Staten
Estonian:
Washingtoni maakond, Arkansas, Ameerika Ühendriigid
Farsi/Persian:
شهرستان واشینگتن، آرکانزاس, آرکانزاس, ایالات متحده آمریکا
Finnish:
Washingtonin piirikunta, Arkansas, Yhdysvallat
Hungarian:
Washington megye, Arkansas, Amerikai Egyesült Államok
Irish Gaelic:
Contae Washington, Arkansas, Stáit Aontaithe Mheiriceá
Japanese:
ワシントン郡, アーカンソー州, アメリカ合衆国
Latin:
Washington Comitatus, Arcansia, Civitates Foederatae Americae
Low Saxon/Low German:
Washington County, Arkansas, USA
Min Dong Chinese:
Washington Gông, Arkansas
Norwegian:
Washington County, Arkansas, USA
Polish:
Hrabstwo Washington, Arkansas, Stany Zjednoczone
Portuguese:
Condado de Washington, Arkansas, Estados Unidos
Romanian:
Comitatul Washington, Arkansas, Statele Unite ale Americii
Serbian:
Округ Вашингтон, Арканзас, Сједињене Америчке Државе
Serbo-Croatian:
Washington County, Arkansas, Sjedinjene Američke Države
Swedish:
Washington County, Arkansas, USA
Turkish:
Washington County, Arkansas, Amerika Birleşik Devletleri
Ukrainian:
Вашингтон, Арканзас, Сполучені Штати Америки
Urdu:
واشنگٹن کاؤنٹی، آرکنساس, آرکنساس, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Washington, Arkansas, Chủng Quốc Hoa Kỳ
Waray:
Condado han Washington, Arkansas, Estados Unidos
Western Punjabi:
واشنگٹن کاؤنٹی، آرکنساس, آرکانساس, امریکہ


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Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

21 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Aragonite
Formula: CaCO3
Reference: Rocks and Minerals, (1988) 63:104-125
Baryte
Formula: BaSO4
Reference: J. Michael Howard (2007) Mineral Species of Arkansas ; Arkansas Geological Commission Bulletin 23
Calcite
Formula: CaCO3
Reference: Rocks and Minerals, (1988) 63:104-125
Celestine
Formula: SrSO4
Reference: Rocks and Minerals, (1988) 63:104-125
Chromite
Formula: Fe2+Cr3+2O4
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.; Jordan, J., Barrett, R. A., Bogard, D. D., & McKay, D. S. (1987) Rare Gas and Petrological Studies of Disaggregated Size Separates of the Fayetteville Meteorite Breccia: Abstracts of the Lunar and Planetary Science Conference 18: 472-473.
Copper
Formula: Cu
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.
'Fayalite-Forsterite Series'
Description: Olivine composition (Fa19) according to Mason (1963) with similar results elsewhere.
Reference: Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 1963).; Wagner, J. K., Cohen, A. J., Hapke, B. W., & Partlow, W. D. (1979) Vacuum ultraviolet reflectance spectra of group H chondrites:In: Lunar and Planetary Science Conference X, Proceedings, Vol 2: pp. 1797-1818. New York: Pergamon Press, Inc. (March 1979).
Galena
Formula: PbS
Reference: Rocks & Min.:63:124; Branner(1940).
'Glass'
Reference: Jordan, J., Barrett, R. A., Bogard, D. D., & McKay, D. S. (1987) Rare Gas and Petrological Studies of Disaggregated Size Separates of the Fayetteville Meteorite Breccia: Abstracts of the Lunar and Planetary Science Conference 18: 472-473.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Rocks and Minerals, (1988) 63:104-125
Gypsum var. Selenite
Formula: CaSO4 · 2H2O
Reference: Rocks and Minerals, (1988) 63:104-125
Ilmenite
Formula: Fe2+TiO3
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.
Iron
Formula: Fe
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.; Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. Geochimica et Cosmochimica Acta 45: 53-67.
Iron var. Kamacite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.; Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. Geochimica et Cosmochimica Acta 45: 53-67.
Isocubanite
Formula: CuFe2S3
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.
'Limonite'
Reference: Arkansas Geological Survey
Merrillite
Formula: Ca9NaMg(PO4)7
Description: Reading "merrillite" (preferred for extraterrestrial objects) for "whitlockite" (terrestrial).
Reference: Kothari, B. K. & Rajan, R. S. (1980) Fission tracks in Fayetteville and Weston phosphates: Metamorphic or brecciation ages? LPI Contribution 412 (Criswell, P. ed.) Lunar and Planetary Institute: Houston, TX.
Millerite
Formula: NiS
Reference: J. Michael Howard (2007) Mineral Species of Arkansas : Arkansas Geological Commission Bulletin 23
Niter
Formula: KNO3
Reference: J. Michael Howard (2007) Mineral Species of Arkansas : Arkansas Geological Commission Bulletin 23
Opal
Formula: SiO2 · nH2O
Reference: Jay Ellis Ransom,1974, Gems and Minerals of America
'Orthopyroxene Subgroup'
Reference: Wagner, J. K., Cohen, A. J., Hapke, B. W., & Partlow, W. D. (1979) Vacuum ultraviolet reflectance spectra of group H chondrites:In: Lunar and Planetary Science Conference X, Proceedings, Vol 2: pp. 1797-1818. New York: Pergamon Press, Inc. (March 1979).
'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Description: Plagioclase found in a number of chondrules.
Reference: Jordan, J., Barrett, R. A., Bogard, D. D., & McKay, D. S. (1987) Rare Gas and Petrological Studies of Disaggregated Size Separates of the Fayetteville Meteorite Breccia: Abstracts of the Lunar and Planetary Science Conference 18: 472-473.
'Plessite'
Description: Plessite kamacite-taenite intergrowths presumably due to quick cooling (post-impact??).
Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. Geochimica et Cosmochimica Acta 45: 53-67.
Pyrite
Formula: FeS2
Reference: J. Michael Howard (2007) Mineral Species of Arkansas : Arkansas Geological Commission Bulletin 23
'Pyroxene Group'
Formula: ADSi2O6
Description: Classification as an 'Olivine-bronzite' chondrites tells us that either orthopyroxene or low-Ca clinopyroxene are present.
Reference: Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Siderite
Formula: FeCO3
Reference: Rocks and Minerals, (1988) 63:104-125
Sphalerite
Formula: ZnS
Reference: Rocks & Min.:63:124; Branner(1940).
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.; Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. Geochimica et Cosmochimica Acta 45: 53-67.
Tetrataenite
Formula: FeNi
Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. Geochimica et Cosmochimica Acta 45: 53-67.
Troilite
Formula: FeS
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pp.; Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. Geochimica et Cosmochimica Acta 45: 53-67.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Iron1.AE.05Fe
var. Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Tetrataenite1.AE.10FeNi
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Isocubanite2.CB.55bCuFe2S3
Millerite2.CC.20NiS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Ilmenite4.CB.05Fe2+TiO3
Opal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Niter5.NA.10KNO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Celestine7.AD.35SrSO4
Gypsum7.CD.40CaSO4 · 2H2O
var. Selenite7.CD.40CaSO4 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Merrillite8.AC.45Ca9NaMg(PO4)7
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'Glass'-
'Limonite'-
'Orthopyroxene Subgroup'-
'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
'Plessite'-
'Pyroxene Group'-ADSi2O6

List of minerals for each chemical element

HHydrogen
H Gypsum var. SeleniteCaSO4 · 2H2O
H OpalSiO2 · nH2O
H GypsumCaSO4 · 2H2O
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
C SideriteFeCO3
NNitrogen
N NiterKNO3
OOxygen
O AragoniteCaCO3
O CalciteCaCO3
O CelestineSrSO4
O SideriteFeCO3
O Gypsum var. SeleniteCaSO4 · 2H2O
O Pyroxene GroupADSi2O6
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
O MerrilliteCa9NaMg(PO4)7
O Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
O OpalSiO2 · nH2O
O GypsumCaSO4 · 2H2O
O BaryteBaSO4
O NiterKNO3
NaSodium
Na MerrilliteCa9NaMg(PO4)7
Na Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mg MerrilliteCa9NaMg(PO4)7
AlAluminium
Al Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Si Pyroxene GroupADSi2O6
Si Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Si OpalSiO2 · nH2O
PPhosphorus
P MerrilliteCa9NaMg(PO4)7
SSulfur
S GalenaPbS
S SphaleriteZnS
S CelestineSrSO4
S Gypsum var. SeleniteCaSO4 · 2H2O
S IsocubaniteCuFe2S3
S TroiliteFeS
S GypsumCaSO4 · 2H2O
S BaryteBaSO4
S MilleriteNiS
S PyriteFeS2
KPotassium
K NiterKNO3
CaCalcium
Ca AragoniteCaCO3
Ca CalciteCaCO3
Ca Gypsum var. SeleniteCaSO4 · 2H2O
Ca MerrilliteCa9NaMg(PO4)7
Ca Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Ca GypsumCaSO4 · 2H2O
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe SideriteFeCO3
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe IsocubaniteCuFe2S3
Fe Iron var. Kamacite(Fe,Ni)
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
Fe TetrataeniteFeNi
Fe IronFe
Fe PyriteFeS2
NiNickel
Ni Iron var. Kamacite(Fe,Ni)
Ni Taenite(Fe,Ni)
Ni TetrataeniteFeNi
Ni MilleriteNiS
CuCopper
Cu CopperCu
Cu IsocubaniteCuFe2S3
ZnZinc
Zn SphaleriteZnS
SrStrontium
Sr CelestineSrSO4
BaBarium
Ba BaryteBaSO4
PbLead
Pb GalenaPbS

Fossils

There are 98 fossil localities from the PaleoBioDB database within this region.

BETA TEST - These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences611
Youngest Fossil Listed307 Ma (Carboniferous)
Oldest Fossil Listed345 Ma (Carboniferous)
Stratigraphic UnitsClick here to view 28 stratigraphic units.
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Porifera
phylum
Animalia : Porifera339.4 - 318.1 Ma
Carboniferous
Michelinia
genus
Animalia : Cnidaria : Anthozoa : Micheliniidae : Michelinia339.4 - 318.1 Ma
Carboniferous
Sutherlandia
genus
Animalia : Cnidaria : Anthozoa : Favositidae : Sutherlandia339.4 - 318.1 Ma
Carboniferous
Barytichisma
genus
Animalia : Cnidaria : Anthozoa : Hapsiphyllidae : Barytichisma339.4 - 318.1 Ma
Carboniferous
Caninostrotion
genus
Animalia : Cnidaria : Anthozoa : Aulophyllidae : Caninostrotion339.4 - 318.1 Ma
Carboniferous
Leonardophyllum
genus
Animalia : Cnidaria : Anthozoa : Verbeekiellidae : Leonardophyllum339.4 - 318.1 Ma
Carboniferous
Annelida
phylum
Animalia : Annelida339.4 - 318.1 Ma
Carboniferous
Gastropoda
class
Animalia : Mollusca : Gastropoda339.4 - 318.1 Ma
Carboniferous
Euloxoceras
genus
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Euloxoceras318.1 - 314.6 Ma
Carboniferous
Mariceras
genus
Animalia : Mollusca : Cephalopoda : Nautilida : Scyphoceratidae : Mariceras326.4 - 318.1 Ma
Carboniferous
Mooreoceras
genus
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Mooreoceras318.1 - 314.6 Ma
Carboniferous
Endolobus
genus
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Endolobus326.4 - 314.6 Ma
Carboniferous
Liroceras
genus
Animalia : Mollusca : Cephalopoda : Nautilida : Liroceratidae : Liroceras326.4 - 314.6 Ma
Carboniferous
Metacoceras
genus
Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Metacoceras318.1 - 314.6 Ma
Carboniferous
Solenochilus
genus
Animalia : Mollusca : Cephalopoda : Nautilida : Solenochilidae : Solenochilus318.1 - 314.6 Ma
Carboniferous
Cancelloceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Gastrioceratidae : Cancelloceras318.1 - 314.6 Ma
Carboniferous
Cymoceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Neodimorphoceratidae : Cymoceras318.1 - 314.6 Ma
Carboniferous
Eoasianites
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Neoicoceratidae : Eoasianites315.2 - 307 Ma
Carboniferous
Gastrioceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Gastrioceratidae : Gastrioceras318.1 - 307 Ma
Carboniferous
Hudsonoceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Girtyoceratidae : Hudsonoceras318.1 - 314.6 Ma
Carboniferous
Metadimorphoceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Dimorphoceratidae : Metadimorphoceras318.1 - 314.6 Ma
Carboniferous
Paradimorphoceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Dimorphoceratidae : Paradimorphoceras326.4 - 314.6 Ma
Carboniferous
Wiedeyoceras
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Wiedeyoceratidae : Wiedeyoceras315.2 - 307 Ma
Carboniferous
Bivalvia
class
Animalia : Mollusca : Bivalvia339.4 - 318.1 Ma
Carboniferous
Kaskia
genus
Animalia : Arthropoda : Trilobita : Proetida : Proetidae : Kaskia345 - 336 Ma
Carboniferous
Hypotetragona
genus
Animalia : Arthropoda : Ostracoda : Kloedeniidae : Hypotetragona345 - 318.1 Ma
Carboniferous
Kirkbya
genus
Animalia : Arthropoda : Ostracoda : Palaeocopida : Kirkbyidae : Kirkbya345 - 318.1 Ma
Carboniferous
Kirkbyella
genus
Animalia : Arthropoda : Ostracoda : Palaeocopida : Kirkbyellidae : Kirkbyella345 - 336 Ma
Carboniferous
Mammoides
genus
Animalia : Arthropoda : Ostracoda : Palaeocopida : Mammoides345 - 336 Ma
Carboniferous
Reviya
genus
Animalia : Arthropoda : Ostracoda : Palaeocopida : Kirkbyidae : Reviya345 - 336 Ma
Carboniferous
Roundyella
genus
Animalia : Arthropoda : Ostracoda : Palaeocopida : Scrobiculidae : Roundyella345 - 318.1 Ma
Carboniferous
Sansabella
genus
Animalia : Arthropoda : Ostracoda : Palaeocopida : Sansabella345 - 336 Ma
Carboniferous
Graphiadactyllis
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Quasillitidae : Graphiadactyllis345 - 318.1 Ma
Carboniferous
Healdia
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Healdiidae : Healdia345 - 318.1 Ma
Carboniferous
Incisurella
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Healdiidae : Incisurella345 - 336 Ma
Carboniferous
Seminolites
genus
Animalia : Arthropoda : Ostracoda : Seminolites339.4 - 318.1 Ma
Carboniferous
Sulcella
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Cavellinidae : Sulcella339.4 - 318.1 Ma
Carboniferous
Microcheilinella
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Pachydomellidae : Microcheilinella345 - 336 Ma
Carboniferous
Monoceratina
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Bythocytheridae : Monoceratina345 - 336 Ma
Carboniferous
Cavellina
genus
Animalia : Arthropoda : Ostracoda : Podocopida : Cavellinidae : Cavellina339.4 - 318.1 Ma
Carboniferous
Tetratylus
genus
Animalia : Arthropoda : Ostracoda : Tetratylus345 - 336 Ma
Carboniferous
Archimedes
genus
Animalia : Bryozoa : Stenolaemata : Fenestrida : Fenestellidae : Archimedes339.4 - 318.1 Ma
Carboniferous
Brachiopoda
phylum
Animalia : Brachiopoda339.4 - 318.1 Ma
Carboniferous
Orbiculoidea
genus
Animalia : Brachiopoda : Lingulata : Lingulida : Discinidae : Orbiculoidea339.4 - 318.1 Ma
Carboniferous
Rhipidomella
genus
Animalia : Brachiopoda : Rhynchonellata : Orthida : Rhipidomellidae : Rhipidomella318.1 - 314.6 Ma
Carboniferous
Schizophoria
genus
Animalia : Brachiopoda : Rhynchonellata : Orthida : Schizophoriidae : Schizophoria339.4 - 314.6 Ma
Carboniferous
Antiquatonia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productidae : Antiquatonia318.1 - 314.6 Ma
Carboniferous
Buxtonia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productidae : Buxtonia339.4 - 318.1 Ma
Carboniferous
Desmoinesia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productellidae : Desmoinesia318.1 - 314.6 Ma
Carboniferous
Diaphragmus
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productidae : Diaphragmus339.4 - 318.1 Ma
Carboniferous
Echinaria
genus
Animalia : Brachiopoda : Strophomenata : Productida : Echinoconchidae : Echinaria318.1 - 314.6 Ma
Carboniferous
Echinoconchus
genus
Animalia : Brachiopoda : Strophomenata : Productida : Echinoconchidae : Echinoconchus339.4 - 318.1 Ma
Carboniferous
Inflatia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productidae : Inflatia339.4 - 318.1 Ma
Carboniferous
Krotovia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productellidae : Krotovia318.1 - 314.6 Ma
Carboniferous
Leptagonia
genus
Animalia : Brachiopoda : Strophomenata : Strophomenida : Rafinesquinidae : Leptagonia318.1 - 314.6 Ma
Carboniferous
Linoproductus
genus
Animalia : Brachiopoda : Strophomenata : Productida : Linoproductidae : Linoproductus318.1 - 314.6 Ma
Carboniferous
Neochonetes
genus
Animalia : Brachiopoda : Strophomenata : Productida : Rugosochonetidae : Neochonetes318.1 - 314.6 Ma
Carboniferous
Ovatia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Monticuliferidae : Ovatia339.4 - 318.1 Ma
Carboniferous
Plicochonetes
genus
Animalia : Brachiopoda : Strophomenata : Productida : Rugosochonetidae : Plicochonetes318.1 - 314.6 Ma
Carboniferous
Productus
genus
Animalia : Brachiopoda : Strophomenata : Productida : Aulostegidae : Productus339.4 - 318.1 Ma
Carboniferous
Tesuquea
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productidae : Tesuquea318.1 - 314.6 Ma
Carboniferous
Zia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Linoproductidae : Zia318.1 - 314.6 Ma
Carboniferous
Rhynchopora
genus
Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Rhynchoporidae : Rhynchopora318.1 - 314.6 Ma
Carboniferous
Sedenticellula
genus
Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Stenoscismatidae : Sedenticellula339.4 - 318.1 Ma
Carboniferous
Anthracospirifer
genus
Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spiriferidae : Anthracospirifer339.4 - 314.6 Ma
Carboniferous
Athyris
genus
Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Athyris339.4 - 318.1 Ma
Carboniferous
Cleiothyridina
genus
Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Cleiothyridina339.4 - 314.6 Ma
Carboniferous
Composita
genus
Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Composita339.4 - 314.6 Ma
Carboniferous
Hustedia
genus
Animalia : Brachiopoda : Rhynchonellata : Athyridida : Neoretziidae : Hustedia318.1 - 314.6 Ma
Carboniferous
Phricodothyris
genus
Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Elythidae : Phricodothyris318.1 - 314.6 Ma
Carboniferous
Punctospirifer
genus
Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Punctospiriferidae : Punctospirifer339.4 - 314.6 Ma
Carboniferous
Reticulariina
genus
Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Reticulariinidae : Reticulariina339.4 - 318.1 Ma
Carboniferous
Spirifer
genus
Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spiriferidae : Spirifer339.4 - 318.1 Ma
Carboniferous
Spiriferellina
genus
Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spiriferellinidae : Spiriferellina318.1 - 314.6 Ma
Carboniferous
Terebratulida
order
Animalia : Brachiopoda : Rhynchonellata : Terebratulida339.4 - 318.1 Ma
Carboniferous
Beecheria
genus
Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Beecheriidae : Beecheria318.1 - 314.6 Ma
Carboniferous
Dielasma
genus
Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Dielasmatidae : Dielasma339.4 - 318.1 Ma
Carboniferous
Pentremites
genus
Animalia : Echinodermata : Pentremitidae : Pentremites318.1 - 314.6 Ma
Carboniferous
Crinoidea
class
Animalia : Echinodermata : Crinoidea339.4 - 318.1 Ma
Carboniferous
Eupachycrinus
genus
Animalia : Echinodermata : Crinoidea : Eupachycrinidae : Eupachycrinus318.1 - 314.6 Ma
Carboniferous
Hydreionocrinus
genus
Animalia : Echinodermata : Crinoidea : Hydreionocrinidae : Hydreionocrinus318.1 - 314.6 Ma
Carboniferous
Archaeocidaris
genus
Animalia : Echinodermata : Echinoidea : Archaeocidaridae : Archaeocidaris318.1 - 314.6 Ma
Carboniferous
Archaeolithophyllum
genus
Plantae : Rhodophyta : Florideophyceae : Cryptonemiales : Archaeolithophyllaceae : Archaeolithophyllum339.4 - 318.1 Ma
Carboniferous
Garwoodia
genus
Plantae : Chlorophyta : Ulvophyceae : Bryopsidales : Pseudoudoteaceae : Garwoodia339.4 - 318.1 Ma
Carboniferous
Perigrammoceras
genus
Animalia : Mollusca : Cephalopoda : Nautilida : Perigrammoceras318.1 - 314.6 Ma
Carboniferous
Euconospira disjuncta
species
Animalia : Mollusca : Gastropoda : Pleurotomariida : Gosseletinidae : Euconospira : Euconospira disjuncta345 - 336 Ma
Carboniferous
Patellilabia laevigata
species
Animalia : Mollusca : Gastropoda : Bellerophontida : Bellerophontidae : Patellilabia : Patellilabia laevigata336 - 323.2 Ma
Carboniferous
Hexagonellidae
family
Animalia : Bryozoa : Stenolaemata : Cystoporida : Hexagonellidae339.4 - 318.1 Ma
Carboniferous
Girvanella
genus
Bacteria : Cyanobacteria : Cyanophyceae : Porostromataceae : Girvanella339.4 - 318.1 Ma
Carboniferous
Trypanites
genus
Trypanites318.1 - 314.6 Ma
Carboniferous
Ortonella
genus
Cyanobacteria : Porostromata : Ortonella339.4 - 318.1 Ma
Carboniferous
Apotocardium peculiare
species
Animalia : Mollusca : Rostroconchia : Conocardiida : Bransoniidae : Apotocardium : Apotocardium peculiare345 - 336 Ma
Carboniferous
Palaeoneilo sera
species
Animalia : Mollusca : Bivalvia : Nuculanida : Malletiidae : Palaeoneilo : Palaeoneilo sera345 - 318.1 Ma
Carboniferous
Solenomorpha nitida
species
Animalia : Mollusca : Bivalvia : Grammysiidae : Solenomorpha : Solenomorpha nitida345 - 318.1 Ma
Carboniferous
Aphralysia
genus
Bacteria : Cyanobacteria : Cyanophyceae : Aphralysiaceae : Aphralysia339.4 - 318.1 Ma
Carboniferous
Gastrochaenolites
genus
Gastrochaenolites318.1 - 314.6 Ma
Carboniferous
Pseudorthoceras knoxense
species
Animalia : Mollusca : Cephalopoda : Pseudorthocerida : Pseudorthoceratidae : Pseudorthoceras : Pseudorthoceras knoxense339.4 - 307 Ma
Carboniferous
Rectangulina
genus
Bacteria : Cyanobacteria : Rectangulina339.4 - 318.1 Ma
Carboniferous
Zaphrentites arkansanus
species
Animalia : Cnidaria : Anthozoa : Stauriida : Hapsiphyllidae : Zaphrentites : Zaphrentites arkansanus345 - 318.1 Ma
Carboniferous
Michelinia meekana
species
Animalia : Cnidaria : Anthozoa : Micheliniidae : Michelinia : Michelinia meekana339.4 - 318.1 Ma
Carboniferous
Sphenotus branneri
species
Animalia : Mollusca : Bivalvia : Grammysiidae : Sanguinolites : Sphenotus branneri345 - 318.1 Ma
Carboniferous
Sphenotus washingtonensis
species
Animalia : Mollusca : Bivalvia : Sanguinolitidae : Sanguinolites : Sphenotus washingtonensis345 - 336 Ma
Carboniferous
Sphenotus dubius
species
Animalia : Mollusca : Bivalvia : Grammysiidae : Sanguinolites : Sphenotus dubius345 - 318.1 Ma
Carboniferous
Sphenotus meslerianus
species
Animalia : Mollusca : Bivalvia : Sanguinolitidae : Sanguinolites : Sphenotus meslerianus345 - 336 Ma
Carboniferous
Edmondia equilateralis
species
Animalia : Mollusca : Bivalvia : Adapedonta : Edmondiidae : Edmondia : Edmondia equilateralis345 - 318.1 Ma
Carboniferous
Cardiomorpha inflata
species
Animalia : Mollusca : Bivalvia : Adapedonta : Edmondiidae : Cardiomorpha : Cardiomorpha inflata345 - 336 Ma
Carboniferous
Polidevcia stevensiana
species
Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Polidevcia : Polidevcia stevensiana345 - 318.1 Ma
Carboniferous
Cypricardinia fayettevillensis
species
Animalia : Mollusca : Bivalvia : Carditida : Cardiniidae : Cypricardinia : Cypricardinia fayettevillensis345 - 318.1 Ma
Carboniferous
Caneyella peculiaris
species
Animalia : Mollusca : Bivalvia : Ostreida : Pterineidae : Caneyella : Caneyella peculiaris345 - 336 Ma
Carboniferous
Aviculopecten squamula
species
Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Aviculopecten : Aviculopecten squamula345 - 318.1 Ma
Carboniferous
Aviculopecten jennyi
species
Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Aviculopecten : Aviculopecten jennyi345 - 336 Ma
Carboniferous
Aviculopecten morrowensis
species
Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Aviculopecten : Aviculopecten morrowensis336 - 326.4 Ma
Carboniferous
Aviculopecten inspeciosus
species
Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Aviculopecten : Aviculopecten inspeciosus345 - 318.1 Ma
Carboniferous
Cypricardella subalata
species
Animalia : Mollusca : Bivalvia : Carditida : Astartidae : Cypricardella : Cypricardella subalata345 - 336 Ma
Carboniferous
Trepospira (Angyomphalus) discus
species
Animalia : Mollusca : Gastropoda : Murchisoniina : Gosseletinidae : Angyomphalus : Trepospira (Angyomphalus) discus345 - 326.4 Ma
Carboniferous
Mourlonia lativittata
species
Animalia : Mollusca : Gastropoda : Murchisoniina : Gosseletinidae : Mourlonia : Mourlonia lativittata345 - 336 Ma
Carboniferous
Platyceras (Orthonychia) compressum
species
Animalia : Mollusca : Gastropoda : Cyrtoneritimorpha : Orthonychiidae : Orthonychia : Platyceras (Orthonychia) compressum336 - 326.4 Ma
Carboniferous
Paladin mucronatus
species
Animalia : Arthropoda : Trilobita : Proetida : Proetidae : Paladin : Paladin mucronatus345 - 318.1 Ma
Carboniferous
Kirkbya reflexa
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Kirkbyidae : Kirkbya : Kirkbya reflexa345 - 336 Ma
Carboniferous
Amphissites rugosus
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Amphissitidae : Amphissites : Amphissites rugosus345 - 336 Ma
Carboniferous
Roundyella simplex
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Scrobiculidae : Roundyella : Roundyella simplex345 - 336 Ma
Carboniferous
Geisina retiferiformis
species
Animalia : Arthropoda : Ostracoda : Platycopida : Knoxitidae : Geisina : Geisina retiferiformis345 - 336 Ma
Carboniferous
Sansabella fayettevillensis
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Sansabella : Sansabella fayettevillensis345 - 318.1 Ma
Carboniferous
Serenida seminalis
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Serenida : Serenida seminalis345 - 336 Ma
Carboniferous
Glyptopleura inopinata
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Glyptopleuridae : Glyptopleura : Glyptopleura inopinata345 - 336 Ma
Carboniferous
Glyptopleura angulata
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Glyptopleuridae : Glyptopleura : Glyptopleura angulata345 - 336 Ma
Carboniferous
Paraparchites cyclopeus
species
Animalia : Arthropoda : Ostracoda : Platycopida : Paraparchitidae : Paraparchites : Paraparchites cyclopeus345 - 318.1 Ma
Carboniferous
Bairdia girtyi
species
Animalia : Arthropoda : Ostracoda : Podocopida : Bairdiidae : Bairdia : Bairdia girtyi345 - 336 Ma
Carboniferous
Orthobairdia cestriensis
species
Animalia : Arthropoda : Ostracoda : Podocopida : Bairdiidae : Orthobairdia : Orthobairdia cestriensis345 - 318.1 Ma
Carboniferous
Graphiadactyllis arkansana
species
Animalia : Arthropoda : Ostracoda : Podocopida : Quasillitidae : Graphiadactyllis : Graphiadactyllis arkansana345 - 318.1 Ma
Carboniferous
Carcharopsis wortheni
species
Animalia : Chordata : Chondrichthyes : Carcharopsis : Carcharopsis wortheni326.4 - 318.1 Ma
Carboniferous
Paleoconus bakeri
species
Animalia : Mollusca : Cephalopoda : Hematitidae : Paleoconus : Paleoconus bakeri326.4 - 318.1 Ma
Carboniferous
Hematites barbarae
species
Animalia : Mollusca : Cephalopoda : Hematitidae : Hematites : Hematites barbarae326.4 - 318.1 Ma
Carboniferous
Haplistion sphaericum
species
Animalia : Porifera : Demospongea : Spirosclerophorida : Haplistiidae : Haplistion : Haplistion sphaericum318.1 - 314.6 Ma
Carboniferous
Mitorthoceras perfilosum
species
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Mitorthoceras : Mitorthoceras perfilosum339.4 - 318.1 Ma
Carboniferous
Mitorthoceras crebriliratum
species
Animalia : Mollusca : Cephalopoda : Pseudorthocerida : Pseudorthoceratidae : Mitorthoceras : Mitorthoceras crebriliratum326.4 - 318.1 Ma
Carboniferous
Stigmaria
genus
Plantae : Stigmaria336 - 326.4 Ma
Carboniferous
Goniatites granosus
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Goniatitidae : Goniatites : Goniatites granosus336 - 326.4 Ma
Carboniferous
Sinuitina (Vorticina) venata
species
Animalia : Mollusca : Gastropoda : Bellerophontida : Tropidodiscidae : Vorticina : Sinuitina (Vorticina) venata345 - 336 Ma
Carboniferous
Virgaspongia ichnata
species
Animalia : Porifera : Anthaspidellidae : Virgaspongia : Virgaspongia ichnata318.1 - 314.6 Ma
Carboniferous
Stioderma hadra
species
Animalia : Porifera : Hexactinellida : Amphidiscosida : Stiodermatidae : Stioderma : Stioderma hadra318.1 - 314.6 Ma
Carboniferous
Paramphicrinus magnus
species
Animalia : Echinodermata : Crinoidea : Euryocrinidae : Paramphicrinus : Paramphicrinus magnus318.1 - 314.6 Ma
Carboniferous
Anchicrinus planulatus
species
Animalia : Echinodermata : Crinoidea : Laudonocrinidae : Anchicrinus : Anchicrinus planulatus318.1 - 314.6 Ma
Carboniferous
Cromyocrinus grandis
species
Animalia : Echinodermata : Crinoidea : Cromyocrinidae : Cromyocrinus : Cromyocrinus grandis318.1 - 314.6 Ma
Carboniferous
Metacromyocrinus gillumi
species
Animalia : Echinodermata : Crinoidea : Cromyocrinidae : Metacromyocrinus : Metacromyocrinus gillumi318.1 - 314.6 Ma
Carboniferous
Paracromyocrinus oklahomensis
species
Animalia : Echinodermata : Crinoidea : Cromyocrinidae : Paracromyocrinus : Paracromyocrinus oklahomensis318.1 - 314.6 Ma
Carboniferous
Arkacrinus dubius
species
Animalia : Echinodermata : Crinoidea : Arkacrinidae : Arkacrinus : Arkacrinus dubius318.1 - 314.6 Ma
Carboniferous
Diphuicrinus croneisi
species
Animalia : Echinodermata : Crinoidea : Diphuicrinidae : Diphuicrinus : Diphuicrinus croneisi318.1 - 314.6 Ma
Carboniferous
Palmerocrinus kesslerensis
species
Animalia : Echinodermata : Crinoidea : Catacrinidae : Palmerocrinus : Palmerocrinus kesslerensis318.1 - 314.6 Ma
Carboniferous
Lasanocrinus strigosus
species
Animalia : Echinodermata : Crinoidea : Pirasocrinidae : Lasanocrinus : Lasanocrinus strigosus318.1 - 314.6 Ma
Carboniferous
Perimestocrinus teneris
species
Animalia : Echinodermata : Crinoidea : Pirasocrinidae : Perimestocrinus : Perimestocrinus teneris318.1 - 314.6 Ma
Carboniferous
Archimastax americanus
species
Animalia : Arthropoda : Insecta : Protorthoptera : Archimastax : Archimastax americanus318.1 - 314.6 Ma
Carboniferous
Pseudopronorites arkansiensis
species
Animalia : Mollusca : Cephalopoda : Prolecanitida : Pronoritidae : Pseudopronorites : Pseudopronorites arkansiensis318.1 - 307 Ma
Carboniferous
Boesites (Eoboesites) scotti
species
Animalia : Mollusca : Cephalopoda : Prolecanitida : Daraelitidae : Boesites : Boesites (Eoboesites) scotti315.2 - 307 Ma
Carboniferous
Phaneroceras compressum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Pseudoparalegoceratidae : Phaneroceras : Phaneroceras compressum318.1 - 307 Ma
Carboniferous
Paralegoceras texanum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Schistoceratidae : Paralegoceras : Paralegoceras texanum318.1 - 314.6 Ma
Carboniferous
Branneroceras branneri
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Schistoceratidae : Branneroceras : Branneroceras branneri318.1 - 314.6 Ma
Carboniferous
Paralegoceras (Diaboloceras) varicostatum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Schistoceratidae : Diaboloceras : Paralegoceras (Diaboloceras) varicostatum315.2 - 307 Ma
Carboniferous
Laevigatosporites
genus
Plantae : Tracheophyta : Laevigatosporites318.1 - 314.6 Ma
Carboniferous
Laevigatosporites vulgaris
species
Plantae : Tracheophyta : Laevigatosporites : Laevigatosporites vulgaris318.1 - 314.6 Ma
Carboniferous
Cyclogranisporites
genus
Plantae : Cyclogranisporites318.1 - 314.6 Ma
Carboniferous
Reticycloceras sequoyahense
species
Animalia : Mollusca : Cephalopoda : Pseudorthocerida : Spyroceratidae : Reticycloceras : Reticycloceras sequoyahense326.4 - 318.1 Ma
Carboniferous
Anthracomartus trilobitus
species
Animalia : Arthropoda : Arachnida : Anthracomartidae : Anthracomartus : Anthracomartus trilobitus318.1 - 314.6 Ma
Carboniferous
Pilosisporites
genus
Plantae : Pteridophyta : Pilosisporites318.1 - 314.6 Ma
Carboniferous
Convolutispora
genus
Plantae : Tracheophyta : Polypodiopsida : Schizaeales : Convolutispora318.1 - 314.6 Ma
Carboniferous
Granulatisporites
genus
Plantae : Tracheophyta : Granulatisporites318.1 - 314.6 Ma
Carboniferous
Lycospora
genus
Plantae : Pteridophyta : Lycopsida : Lycospora318.1 - 314.6 Ma
Carboniferous
Lusitanites subcircularis
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Neoglyphioceratidae : Lusitanites : Lusitanites subcircularis336 - 326.4 Ma
Carboniferous
Apiculatasporites
genus
Plantae : Pteridophyta : Pteridopsida : Apiculatasporites318.1 - 314.6 Ma
Carboniferous
Lophotriletes
genus
Lophotriletes318.1 - 314.6 Ma
Carboniferous
Reticuloceras wainwrighti
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Reticuloceratidae : Reticuloceras : Reticuloceras wainwrighti323.2 - 314.6 Ma
Carboniferous
Reticuloceras wainwright
species
Reticuloceras wainwright318.1 - 314.6 Ma
Carboniferous
Reticuloceras tiro
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Reticuloceratidae : Reticuloceras : Reticuloceras tiro323.2 - 314.6 Ma
Carboniferous
Retites semiretia
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Reticuloceratidae : Retites : Retites semiretia318.1 - 314.6 Ma
Carboniferous
Quinnites henbesti
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Reticuloceratidae : Quinnites : Quinnites henbesti318.1 - 314.6 Ma
Carboniferous
Quinnites textum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Reticuloceratidae : Quinnites : Quinnites textum323.2 - 314.6 Ma
Carboniferous
Arkanites relictus
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Reticuloceratidae : Arkanites : Arkanites relictus318.1 - 314.6 Ma
Carboniferous
Cancelloceras huntsvillense
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Gastrioceratidae : Cancelloceras : Cancelloceras huntsvillense318.1 - 314.6 Ma
Carboniferous
Verneuilites pygmaeus
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Reticuloceratidae : Verneuilites : Verneuilites pygmaeus318.1 - 314.6 Ma
Carboniferous
Rayonnoceras fayettevillense
species
Animalia : Mollusca : Cephalopoda : Carbactinoceratidae : Rayonnoceras : Rayonnoceras fayettevillense326.4 - 318.1 Ma
Carboniferous
Rayonnoceras solidiforme
species
Animalia : Mollusca : Cephalopoda : Carbactinoceratidae : Rayonnoceras : Rayonnoceras solidiforme326.4 - 318.1 Ma
Carboniferous
Bactrites gaitherensis
species
Animalia : Mollusca : Cephalopoda : Bactritidae : Bactrites : Bactrites gaitherensis318.1 - 314.6 Ma
Carboniferous
Brachycycloceras washingtonense
species
Animalia : Mollusca : Cephalopoda : Brachycycloceratidae : Brachycycloceras : Brachycycloceras washingtonense326.4 - 318.1 Ma
Carboniferous
Mooreoceras wedingtonianum
species
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Mooreoceras : Mooreoceras wedingtonianum326.4 - 318.1 Ma
Carboniferous
Reticycloceras croneisi
species
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Reticycloceras : Reticycloceras croneisi326.4 - 318.1 Ma
Carboniferous
Mitorthoceras girtyi
species
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Mitorthoceras : Mitorthoceras girtyi326.4 - 318.1 Ma
Carboniferous
Mitorthoceras yellvillense
species
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Mitorthoceras : Mitorthoceras yellvillense326.4 - 318.1 Ma
Carboniferous
Euloxoceras greenei
species
Animalia : Mollusca : Cephalopoda : Pseudorthocerida : Spyroceratidae : Euloxoceras : Euloxoceras greenei326.4 - 318.1 Ma
Carboniferous
Dinocycloceras prolixum
species
Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : Dinocycloceras : Dinocycloceras prolixum318.1 - 314.6 Ma
Carboniferous
Endolobus clorensis
species
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Endolobus : Endolobus clorensis339.4 - 318.1 Ma
Carboniferous
Valhallites ornatus
species
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Valhallites : Valhallites ornatus326.4 - 318.1 Ma
Carboniferous
Knightoceras patulum
species
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Knightoceras : Knightoceras patulum318.1 - 314.6 Ma
Carboniferous
Knightoceras oxylobatum
species
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Knightoceras : Knightoceras oxylobatum318.1 - 307 Ma
Carboniferous
Tylonautilus gratiosus
species
Animalia : Mollusca : Cephalopoda : Nautilida : Gzheloceratidae : Tylonautilus : Tylonautilus gratiosus336 - 318.1 Ma
Carboniferous
Stroboceras sulcatum
species
Animalia : Mollusca : Cephalopoda : Nautilida : Trigonoceratidae : Stroboceras : Stroboceras sulcatum326.4 - 318.1 Ma
Carboniferous
Stearoceras smithi
species
Animalia : Mollusca : Cephalopoda : Nautilida : Grypoceratidae : Stearoceras : Stearoceras smithi318.1 - 314.6 Ma
Carboniferous
Bistrialites bicostatus
species
Animalia : Mollusca : Cephalopoda : Nautilida : Liroceratidae : Bistrialites : Bistrialites bicostatus326.4 - 318.1 Ma
Carboniferous
Coelogasteroceras gracile
species
Animalia : Mollusca : Cephalopoda : Nautilida : Liroceratidae : Coelogasteroceras : Coelogasteroceras gracile318.1 - 314.6 Ma
Carboniferous
Peripetoceras ozarkense
species
Animalia : Mollusca : Cephalopoda : Nautilida : Liroceratidae : Peripetoceras : Peripetoceras ozarkense336 - 326.4 Ma
Carboniferous
Muensteroceras pisiforme
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Muensteroceratidae : Muensteroceras : Muensteroceras pisiforme326.4 - 318.1 Ma
Carboniferous
Cluthoceras glicki
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Muensteroceratidae : Cluthoceras : Cluthoceras glicki326.4 - 318.1 Ma
Carboniferous
Wiedeyoceras williamsi
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Wiedeyoceratidae : Wiedeyoceras : Wiedeyoceras williamsi318.1 - 314.6 Ma
Carboniferous
Phaneroceras kesslerense
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Pseudoparalegoceratidae : Phaneroceras : Phaneroceras kesslerense318.1 - 307 Ma
Carboniferous
Gastrioceras formosum
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Gastrioceratidae : Gastrioceras : Gastrioceras formosum318.1 - 314.6 Ma
Carboniferous
Winslowoceras henbesti
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Welleritidae : Winslowoceras : Winslowoceras henbesti318.1 - 307 Ma
Carboniferous
Neoglyphioceras caneyanum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Neoglyphioceratidae : Neoglyphioceras : Neoglyphioceras caneyanum336 - 326.4 Ma
Carboniferous
Glaphyrites fayettevillae
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Glaphyritidae : Glaphyrites : Glaphyrites fayettevillae326.4 - 318.1 Ma
Carboniferous
Paracravenoceras ozarkense
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Glaphyritidae : Paracravenoceras : Paracravenoceras ozarkense326.4 - 318.1 Ma
Carboniferous
Glaphyrites depressus
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Glaphyritidae : Glaphyrites : Glaphyrites depressus318.1 - 314.6 Ma
Carboniferous
Syngastrioceras globosum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Glaphyritidae : Syngastrioceras : Syngastrioceras globosum318.1 - 314.6 Ma
Carboniferous
Glaphyrites morrowensis
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Glaphyritidae : Glaphyrites : Glaphyrites morrowensis318.1 - 314.6 Ma
Carboniferous
Syngastrioceras oblatum
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Glaphyritidae : Syngastrioceras : Syngastrioceras oblatum318.1 - 314.6 Ma
Carboniferous
Fayettevillea planorbis
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Glaphyritidae : Fayettevillea : Fayettevillea planorbis326.4 - 318.1 Ma
Carboniferous
Eumorphoceras milleri
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Girtyoceratidae : Eumorphoceras : Eumorphoceras milleri326.4 - 318.1 Ma
Carboniferous
Homoceratoides cracens
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Ramositidae : Homoceratoides : Homoceratoides cracens318.1 - 314.6 Ma
Carboniferous
Gordonites filifer
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Gordonites : Gordonites filifer318.1 - 314.6 Ma
Carboniferous
Gordonites matheri
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Gordonites : Gordonites matheri318.1 - 314.6 Ma
Carboniferous
Schartymites paynei
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Glaphyritidae : Schartymites : Schartymites paynei318.1 - 314.6 Ma
Carboniferous
Bisatoceras secundum
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Bisatoceratidae : Bisatoceras : Bisatoceras secundum318.1 - 314.6 Ma
Carboniferous
Gastrioceras (Lissogastrioceras) fittsi
species
Animalia : Mollusca : Cephalopoda : Goniatitida : Gastrioceratidae : Gastrioceras : Gastrioceras (Lissogastrioceras) fittsi318.1 - 314.6 Ma
Carboniferous
Pygmaeoceras solidum
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Reticuloceratidae : Verneuilites : Pygmaeoceras solidum318.1 - 314.6 Ma
Carboniferous
Axinolobus modulus
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Welleritidae : Axinolobus : Axinolobus modulus318.1 - 314.6 Ma
Carboniferous
Proshumardites morrowanus
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Delepinoceratidae : Proshumardites : Proshumardites morrowanus318.1 - 314.6 Ma
Carboniferous
Megapronorites baconi
species
Animalia : Mollusca : Cephalopoda : Prolecanitida : Pronoritidae : Megapronorites : Megapronorites baconi326.4 - 318.1 Ma
Carboniferous
Eobaphetes kansensis
species
Animalia : Chordata : Osteichthyes : Temnospondyli : Anthracosauridae : Eobaphetes : Eobaphetes kansensis326.4 - 306.95 Ma
Carboniferous
Pseudopronorites quinni
species
Animalia : Mollusca : Cephalopoda : Prolecanitida : Pronoritidae : Pseudopronorites : Pseudopronorites quinni318.1 - 314.6 Ma
Carboniferous
Diaboloceras neumeieri
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Schistoceratidae : Diaboloceras : Diaboloceras neumeieri315.2 - 307 Ma
Carboniferous
Valhallites tuberculatus
species
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Valhallites : Valhallites tuberculatus326.4 - 318.1 Ma
Carboniferous
Valhallites westforkensis
species
Animalia : Mollusca : Cephalopoda : Nautilida : Koninckioceratidae : Valhallites : Valhallites westforkensis326.4 - 318.1 Ma
Carboniferous
Epistroboceras mangeri
species
Animalia : Mollusca : Cephalopoda : Nautilida : Trigonoceratidae : Epistroboceras : Epistroboceras mangeri326.4 - 318.1 Ma
Carboniferous
Knoxisporites
genus
Plantae : Knoxisporites318.1 - 314.6 Ma
Carboniferous
Neosandia
genus
Animalia : Brachiopoda : Strophomenata : Productida : Productellidae : Neosandia318.1 - 314.6 Ma
Carboniferous
Fossil LocalitiesClick to show 98 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Washington_County,_Arkansas
Wikidata ID:Q61148
GeoNames ID:4135394

Localities in this Region

Other Regions, Features and Areas that Intersect


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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