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Clear Fork - Arroyo, Texas, USA

GroupClear Fork
FormationArroyo
Age:279 - 272 Ma
Permian
IntervalSakmarian - Kungurian
Lithologyshale, claystone, claystone/sandstone, sandstone
Number of Collections21
Number of Occurrences169

Recorded Sample Locations

LocationRegionStratigraphic Name
Lake Kemp 2Baylor County, Texas, USAClear Fork - Arroyo
Broiliellus pocketBaylor County, Texas, USAClear Fork - Arroyo
West Coffee CreekBaylor County, Texas, USAClear Fork - Arroyo
Coffee CreekBaylor County, Texas, USAClear Fork - Arroyo
Indian CreekBaylor County, Texas, USAClear Fork - Arroyo
Whiskey CreekBaylor County, Texas, USAClear Fork - Arroyo
Craddock BonebedBaylor County, Texas, USAClear Fork - Arroyo
Hog CreekBaylor County, Texas, USAClear Fork - Arroyo
Table Top MountainBaylor County, Texas, USAClear Fork - Arroyo
Crooked CreekBaylor County, Texas, USAClear Fork - Arroyo
Beaver CreekWilbarger County, Texas, USAClear Fork - Arroyo
Big Wichita River Baylor County, Texas, USAClear Fork - Arroyo
Indian CreekBaylor County, Texas, USAClear Fork - Arroyo
East Coffee Creek 47Baylor County, Texas, USAClear Fork - Arroyo

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Waggoner Ranch290 - 272 Ma
Permian
limestone/"shale"5
Clear Fork - Vale279 - 268 Ma
Permian
sandstone, "shale", conglomerate, conglomerate/"siliciclastic", "siliciclastic", sandstone/siltstone, siltstone/sandstone, siltstone/claystone67
Wichita - Waggoner Ranch279 - 268 Ma
Permian
limestone/"shale", "limestone"/claystone, claystone45

Recorded Fossils

Accepted NameHierarchyAge
Artisia sp.
genus
6Plantae : Cordaitales : Cordaitaceae : Artisia295.5 - 272.3 Ma
Permian
Pinophyta
phylum
2Plantae : Pinophyta295.5 - 272.3 Ma
Permian
Samaropsis sp.
genus
6Plantae : Tracheophyta : Pinopsida : Cordaitaceae : Samaropsis295.5 - 272.3 Ma
Permian
Brachyphyllum sp.
genus
6Plantae : Tracheophyta : Pinopsida : Pinales : Araucariaceae : Brachyphyllum295.5 - 272.3 Ma
Permian
Xyloiulus sp.
genus
6Animalia : Arthropoda : Myriapoda : Spirobolida : Xyloiulidae : Xyloiulus290.1 - 279.3 Ma
Permian
Brachydegma caelatum
species
7Animalia : Chordata : Actinopteri : Palaeonisciformes : Dicellopygidae : Brachydegma : Brachydegma caelatum290.1 - 279.3 Ma
Permian
Barbclabornia luedersensis
species
7Animalia : Chordata : Chondrichthyes : Bransonelliformes : Barbclabornia : Barbclabornia luedersensis290.1 - 279.3 Ma
Permian
Brachydectes elongatus
species
7Animalia : Chordata : Osteichthyes : Caudata : Cocytinidae : Brachydectes : Brachydectes elongatus279.3 - 272.3 Ma
Permian
Casea broilii
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Caseidae : Casea : Casea broilii279.3 - 272.3 Ma
Permian
Trichasaurus texensis
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Caseidae : Trichasaurus : Trichasaurus texensis279.3 - 272.3 Ma
Permian
Diadectes sp.
genus
6Animalia : Chordata : Osteichthyes : Cotylosauria : Diadectidae : Diadectes279.3 - 272.3 Ma
Permian
Diadectes tenuitectes
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Diadectidae : Diadectes : Diadectes tenuitectes279.3 - 272.3 Ma
Permian
Edaphosaurus sp.
genus
6Animalia : Chordata : Reptilia : Edaphosauridae : Edaphosaurus279.3 - 272.3 Ma
Permian
Edaphosaurus pogonias
species
7Animalia : Chordata : Reptilia : Edaphosauridae : Edaphosaurus : Edaphosaurus pogonias279.3 - 272.3 Ma
Permian
Bathyglyptus theodori
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Bathyglyptus : Bathyglyptus theodori279.3 - 272.3 Ma
Permian
Tetraceratops insignis
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Tetraceratops : Tetraceratops insignis279.3 - 272.3 Ma
Permian
Ophiacodon sp.
genus
6Animalia : Chordata : Osteichthyes : Cotylosauria : Ophiacodontidae : Ophiacodon279.3 - 272.3 Ma
Permian
Varanosaurus acutirostris
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Ophiacodontidae : Varanosaurus : Varanosaurus acutirostris279.3 - 272.3 Ma
Permian
Dimetrodon sp.
genus
6Animalia : Chordata : Reptilia : Sphenacodontidae : Dimetrodon279.3 - 272.3 Ma
Permian
Dimetrodon dollovianus
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Sphenacodontidae : Dimetrodon : Dimetrodon dollovianus279.3 - 272.3 Ma
Permian
Dimetrodon gigashomogenes
species
7Animalia : Chordata : Reptilia : Sphenacodontidae : Dimetrodon : Dimetrodon gigashomogenes279.3 - 272.3 Ma
Permian
Dimetrodon grandis
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Sphenacodontidae : Dimetrodon : Dimetrodon grandis279.3 - 272.3 Ma
Permian
Dimetrodon limbatus
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Sphenacodontidae : Dimetrodon : Dimetrodon limbatus279.3 - 272.3 Ma
Permian
Dimetrodon loomisi
species
7Animalia : Chordata : Reptilia : Sphenacodontidae : Dimetrodon : Dimetrodon loomisi279.3 - 272.3 Ma
Permian
Clepsydrops natalis
species
7Animalia : Chordata : Reptilia : Sphenacodontidae : Dimetrodon : Clepsydrops natalis279.3 - 272.3 Ma
Permian
Secodontosaurus obtusidens
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Sphenacodontidae : Secodontosaurus : Secodontosaurus obtusidens279.3 - 272.3 Ma
Permian
Sphenacodontidae
family
5Animalia : Chordata : Reptilia : Sphenacodontidae279.3 - 272.3 Ma
Permian
Varanops brevirostris
species
7Animalia : Chordata : Osteichthyes : Cotylosauria : Varanopidae : Varanops : Varanops brevirostris279.3 - 272.3 Ma
Permian
Lysorophus sp.
genus
6Animalia : Chordata : Osteichthyes : Lysorophia : Lysorophus279.3 - 272.3 Ma
Permian
Quasicaecilia texana
species
7Animalia : Chordata : Osteichthyes : Microsauria : Brachystelechidae : Quasicaecilia : Quasicaecilia texana279.3 - 272.3 Ma
Permian
Cardiocephalus sternbergi
species
7Animalia : Chordata : Osteichthyes : Microsauria : Gymnarthridae : Cardiocephalus : Cardiocephalus sternbergi279.3 - 272.3 Ma
Permian
Euryodus primus
species
7Animalia : Chordata : Osteichthyes : Microsauria : Gymnarthridae : Euryodus : Euryodus primus279.3 - 272.3 Ma
Permian
Pariotichus brachyops
species
7Animalia : Chordata : Osteichthyes : Microsauria : Gymnarthridae : Pariotichus : Pariotichus brachyops279.3 - 272.3 Ma
Permian
Micraroter erythrogeios
species
7Animalia : Chordata : Osteichthyes : Microsauria : Ostodolepidae : Micraroter : Micraroter erythrogeios279.3 - 272.3 Ma
Permian
Ostodolepis brevispinatus
species
7Animalia : Chordata : Osteichthyes : Microsauria : Ostodolepidae : Ostodolepis : Ostodolepis brevispinatus279.3 - 272.3 Ma
Permian
Pelodosotis elongatum
species
7Animalia : Chordata : Osteichthyes : Microsauria : Ostodolepidae : Pelodosotis : Pelodosotis elongatum279.3 - 272.3 Ma
Permian
Diplocaulus sp.
genus
6Animalia : Chordata : Osteichthyes : Diplocaulidae : Diplocaulus279.3 - 272.3 Ma
Permian
Diplocaulus brevirostris
species
7Animalia : Chordata : Osteichthyes : Diplocaulidae : Diplocaulus : Diplocaulus brevirostris279.3 - 272.3 Ma
Permian
Diplocaulus magnicornis
species
7Animalia : Chordata : Osteichthyes : Diplocaulidae : Diplocaulus : Diplocaulus magnicornis279.3 - 272.3 Ma
Permian
Goniocephalus willistoni
species
7Animalia : Chordata : Osteichthyes : Goniocephalus : Goniocephalus willistoni279.3 - 272.3 Ma
Permian
Pantylus coicodus
species
7Animalia : Chordata : Osteichthyes : Pantylus : Pantylus coicodus279.3 - 272.3 Ma
Permian
Seymouria sp.
genus
6Animalia : Chordata : Osteichthyes : Seymouriidae : Seymouria279.3 - 272.3 Ma
Permian
Seymouria baylorensis
species
7Animalia : Chordata : Amphibia : Seymouriidae : Seymouria : Seymouria baylorensis279.3 - 272.3 Ma
Permian
Alegeinosaurus aphthitos
species
7Animalia : Chordata : Amphibia : Dissorophidae : Alegeinosaurus : Alegeinosaurus aphthitos279.3 - 272.3 Ma
Permian
Aspidosaurus chiton
species
7Animalia : Chordata : Amphibia : Dissorophidae : Aspidosaurus : Aspidosaurus chiton279.3 - 272.3 Ma
Permian
Broiliellus arroyoensis
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Dissorophidae : Broiliellus : Broiliellus arroyoensis279.3 - 272.3 Ma
Permian
Cacops aspidephorus
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Dissorophidae : Cacops : Cacops aspidephorus279.3 - 272.3 Ma
Permian
Dissorophidae
family
5Animalia : Chordata : Osteichthyes : Temnospondyli : Dissorophidae279.3 - 272.3 Ma
Permian
Dissorophus sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Dissorophidae : Dissorophus279.3 - 272.3 Ma
Permian
Dissorophus multicinctus
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Dissorophidae : Dissorophus : Dissorophus multicinctus279.3 - 272.3 Ma
Permian
Isodectes sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Eobrachyopidae : Isodectes279.3 - 272.3 Ma
Permian
Isodectes obtusus
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Eobrachyopidae : Isodectes : Isodectes obtusus279.3 - 272.3 Ma
Permian
Anisodexis sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Eryopidae : Anisodexis279.3 - 272.3 Ma
Permian
Eryops sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Eryopidae : Eryops279.3 - 272.3 Ma
Permian
Eryops megacephalus
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Eryopidae : Eryops : Eryops megacephalus279.3 - 272.3 Ma
Permian
Temnospondyli
unranked clade
99Animalia : Chordata : Osteichthyes : Temnospondyli279.3 - 272.3 Ma
Permian
Acheloma sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Trematopidae : Acheloma279.3 - 272.3 Ma
Permian
Acheloma cumminsi
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Trematopidae : Acheloma : Acheloma cumminsi279.3 - 272.3 Ma
Permian
Trimerorhachis sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Trimerorhachidae : Trimerorhachis279.3 - 272.3 Ma
Permian
Trimerorhachis greggi
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Trimerorhachidae : Trimerorhachis : Trimerorhachis greggi279.3 - 272.3 Ma
Permian
Trimerorhachis mesops
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Trimerorhachidae : Trimerorhachis : Trimerorhachis mesops279.3 - 272.3 Ma
Permian
Dasyceps microphthalmus
species
7Animalia : Chordata : Osteichthyes : Temnospondyli : Zatracheidae : Dasyceps : Dasyceps microphthalmus279.3 - 272.3 Ma
Permian
Zatrachys sp.
genus
6Animalia : Chordata : Osteichthyes : Temnospondyli : Zatracheidae : Zatrachys279.3 - 272.3 Ma
Permian
Araeoscelis gracilis
species
7Animalia : Chordata : Reptilia : Araeoscelidia : Araeoscelidae : Araeoscelis : Araeoscelis gracilis279.3 - 272.3 Ma
Permian
Bolosaurus sp.
genus
6Animalia : Chordata : Reptilia : Bolosauria : Bolosauridae : Bolosaurus279.3 - 272.3 Ma
Permian
Captorhinus sp.
genus
6Animalia : Chordata : Reptilia : Testudines : Captorhinidae : Captorhinus279.3 - 272.3 Ma
Permian
Captorhinus aguti
species
7Animalia : Chordata : Reptilia : Captorhinidae : Captorhinus : Captorhinus aguti279.3 - 272.3 Ma
Permian
Labidosaurus sp.
genus
6Animalia : Chordata : Reptilia : Testudines : Captorhinidae : Labidosaurus279.3 - 272.3 Ma
Permian
Labidosaurus hamatus
species
7Animalia : Chordata : Reptilia : Captorhinidae : Labidosaurus : Labidosaurus hamatus279.3 - 272.3 Ma
Permian
Taeniopteris sp.
genus
6Plantae : Tracheophyta : Cycadopsida : Cycadales : Crossozamiaceae : Taeniopteris295.5 - 272.3 Ma
Permian
Walchia sp.
genus
6Plantae : Pteridophyta : Lycopsida : Lycopodiaceae : Walchia295.5 - 272.3 Ma
Permian

References

Cope E. D. A batrachian armadillo, The American Naturalist 29, 998
Cope E. D. The reptilian order Cotylosauria, Proceedings of the American Philosophical Society 34, 436-457
Cope E. D. Third contribution to the history of the Vertebrata of the Permian formation of Texas, Proceedings of the American Philosophical Society 20, 447-461
Cope E. D. Systematic catalogue of the species of Vertebrata found in the beds of the Permian Epoch in North America with notes and descriptions, Transactions of the Philosophical Society of America, New Series 16 2, 285-297
Cope E. D. Second contribution to the history of the Cotylosauria, Proceedings of the American Philosophical Society 35 151, 122-139
Cope E. D. The long-spined Theromorpha of the Permian Epoch, The American Naturalist 20 6, 544-545
Broili F. (1904) Permische Stegocephalen und Reptilien aus Texas, Palaeontographica 51, 1-120
Case E. C. (1907) Revision of the Pelycosauria of North America., Carnegie Institution of Washington 55, 3-176
Matthew W. D. (1908) A four-horned pelycosaurian from the Permian of Texas, Bulletin of the American Museum of Natural History 24, 183-185
Case E. C. (1910) The skeleton of Poecilospondylus francisi, a new genus and species of Pelycosauria, Bulletin of the American Museum of Natural History 23, 183-188
Williston S. W. (1910) New Permian reptiles; rhachitomous vertebrae, Journal of Geology 18, 585-600
Williston S. W. (1910) Cacops, Desmospondylus; new genera of Permian vertebrates, Geological Society America Bulletin 21, 249-284
Case E. C. (1910) New or little known reptiles and amphibians from the Permian (?) of Texas, Bulletin of the American Museum of Natural History 28, 163-181
Case E. C. (1911) A revision of the Cotylosauria of North America, Carnegie Institution of Washington Publication 145, 1-121
Williston S. W. (1911) , American Permian Vertebrates, 1-145
Broili F. (1913) Über zwei Stegocephalenreste aus dem texanischen Perm, Neues Jahrbuch für Mineralogie, Geologie und Paläontologie 1913 1, 96-100
Williston S. W. (1913) Ostodolepis brevispinatus, a new reptile from the Permian of Texas, Journal of Geology 21 4, 363-366
Williston S. W. (1917) Labidosaurus Cope, a Lower Permian cotylosaur reptile from Texas, Journal of Geology 25 4, 309-321
Romer A. S. (1928) Vertebrate faunal horizons in the Texas Permo-Carboniferous red beds, University of Texas Bulletin 2801, 67-108
Romer A. S. (1936) Studies on American Permo-Carboniferous reptiles, Problems of Paleontology 1, 85-93
Romer A. S. (1937) New genera and species of pelycosaurian reptiles, Proceedings of the New England Zoölogical Club 16, 89-95
Dunkle D. H. (1939) A new paleoniscid fish from the Texas Permian, American Journal of Science 237 4, 262-274
White T. E. (1939) Osteology of Seymouria baylorensis Broili, Bulletin of the Museum of Comparative Zoology 85 5, 325-409
Romer A. S., Price L. I. (1940) Review of the Pelycosauria, Geological Society of America Special Paper 28, 1-538
Olson E. C. (1951) Diplocaulus, a Study in Growth and Variation, Fieldiana: Geology 11 2, 57-154
Vaughn P. P. (1955) The Permian reptile Araeoscelis restudied, Bulletin of the Museum of Comparative Zoology 113 5, 305-467
Gregory J. T., Peabody F. E., et al (1956) Revision of the Gymnarthridae - American Permian Microsaurs, Bulletin of the Peabody Museum of Natural History 10, 1-77
Baird D. (1958) New records of Paleozoic diplopod Myriapoda, Journal of Paleontology 32, 239-241
Seltin R. J. (1959) A review of the family Captorhinidae, Fieldiana: Geology 10 34, 461-509
Fox R. C., Bowman M. C. (1966) Osteology and Relationships of Captorhinus aguti (Cope) (Reptilia: Captorhinomorpha), The University of Kansas Paleontological Contributions, Series Vertebrata 11, 1-79
Mamay S. H. (1967) Lower Permian plants from the Arroyo Formation in Baylor County, north-central Texas, U.S. Geological Survey Professional Paper 575-C, 120-126
Olson E. C. (1967) Early Permian Vertebrates, Oklahoma Geological Survey Circular 74, 1-111
DeMar R. E. (1967) Two new species of Broiliellus (amphibians) from the Permian of Texas, Fieldiana Geology 16 5, 117-129
Carroll R. L., Gaskill P. (1978) The Order Microsauria, Memoirs of the American Philosophical Society 126, 1-211
Reisz R. R., Heaton M. J. (1982) Bayloria morei Olson 1941 identified as an immature specimen of the Permian reptile Captorhinus aguti (Cope, 1882), Canadian Journal of Earth Sciences 19 6, 1323-1234
Reisz R. R. (1986) Pelycosauria, Handbuch der Paläoherpetologie / Encyclopedia of Paleoherpetology 17A, 1-102
Mamay S. H. (1986) New species of Gigantopteridaceae, Phytologia 61, 311-315
Mamay S. H., Miller J. M., et al (1988) Foliar morphology and anatomy of the gigantopterid plant Delnortea abbottiae, from the Lower Permian of West Texas, American Journal of Botany 75 9, 1409-1433
Carroll R. L. (1990) A tiny microsaur from the lower Permian of Texas: size constraints in Palaeozoic tetrapods, Palaeontology 33, 893-909
Wellstead C. F. (1991) Taxonomic revision of the Lysorophia, Permo-Carboniferous lepospondyl amphibians, Bulletin of the American Museum of Natural History 209, 1-90
Johnson G. D. (2003) Dentitions of Barbclabornia (new genus, Chondrichthyes: Xenacanthiformes) from the Upper Palaeozoic of North America, Mitteilungen aus dem Museum für Naturkunde in Berlin, Geowissenschaftliche Reihe 6, 125-160
Schoch R. R., Milner A. R. (2014) Handbook of Paleoherpetology Part 3A2 Temnospondyli I
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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