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Observation Quarry, Dawes County, Nebraska, USA

Lat/Long (Decimal)42.6833,-102.85
Co-ordinates Derivationstated in text
Given LocationNebraska, United States
Mindat.org Region (for given coordinates)Dawes County, Nebraska, USA

Collections

CollectionReferenceStratigraphic NameCommentsLithologyAge
Observation QuarryRich T. H. V. (1981)Olcott Formation equivalent15.97 - 13.6 Ma
Miocene

Recorded Fossils

Accepted NameHierarchyAge
Pediohierax ramenta
species
Animalia : Chordata : Aves : Falconiformes : Falconidae : Pediohierax : Pediohierax ramenta15.97 - 13.6 Ma
Miocene
Ardea sp.
genus
Animalia : Chordata : Aves : Pelecaniformes : Ardeidae : Ardea15.97 - 13.6 Ma
Miocene
Poebrotherium eximium
species
Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Poebrotherium : Poebrotherium eximium15.97 - 13.6 Ma
Miocene
Pseudoparablastomeryx scotti
species
Animalia : Chordata : Mammalia : Artiodactyla : Hypertragulidae : Pseudoparablastomeryx : Parablastomeryx scotti15.97 - 13.6 Ma
Miocene
Brachycrus siouense
species
Animalia : Chordata : Mammalia : Artiodactyla : Merycoidodontidae : Brachycrus : Brachycrus siouense15.97 - 13.6 Ma
Miocene
Merychyus relictus
species
Animalia : Chordata : Mammalia : Artiodactyla : Merycoidodontidae : Merychyus : Merychyus relictus15.97 - 13.6 Ma
Miocene
Ticholeptus zygomaticus
species
Animalia : Chordata : Mammalia : Artiodactyla : Merycoidodontidae : Ticholeptus : Ticholeptus zygomaticus15.97 - 13.6 Ma
Miocene
Blastomeryx gemmifer
species
Animalia : Chordata : Mammalia : Artiodactyla : Moschidae : Blastomeryx : Blastomeryx gemmifer15.97 - 13.6 Ma
Miocene
Bouromeryx americanus
species
Animalia : Chordata : Mammalia : Artiodactyla : Palaeomerycidae : Bouromeryx : Bouromeryx americanus15.97 - 13.6 Ma
Miocene
Drepanomeryx falciformis
species
Animalia : Chordata : Mammalia : Artiodactyla : Dromomerycidae : Drepanomeryx : Drepanomeryx falciformis15.97 - 13.6 Ma
Miocene
Dromomeryx borealis
species
Animalia : Chordata : Mammalia : Artiodactyla : Dromomerycidae : Dromomeryx : Blastomeryx borealis15.97 - 13.6 Ma
Miocene
Lambdoceras siouxensis
species
Animalia : Chordata : Mammalia : Artiodactyla : Protoceratidae : Lambdoceras : Lambdoceras siouxensis15.97 - 13.6 Ma
Miocene
Prosthennops xiphodonticus
species
Animalia : Chordata : Mammalia : Artiodactyla : Tayassuidae : Prosthennops : Prosthennops xiphodonticus15.97 - 13.6 Ma
Miocene
Pliocyon sp.
genus
Animalia : Chordata : Mammalia : Carnivora : Amphicyonidae : Pliocyon15.97 - 13.6 Ma
Miocene
Cynarctoides acridens
species
Animalia : Chordata : Mammalia : Carnivora : Canidae : Cynarctoides : Cynarctoides acridens15.97 - 13.6 Ma
Miocene
Leptocyon leidyi
species
Animalia : Chordata : Mammalia : Carnivora : Canidae : Leptocyon : Leptocyon leidyi15.97 - 13.6 Ma
Miocene
Paracynarctus sinclairi
species
Animalia : Chordata : Mammalia : Carnivora : Canidae : Paracynarctus : Paracynarctus sinclairi15.97 - 13.6 Ma
Miocene
Tomarctus hippophaga
species
Animalia : Chordata : Mammalia : Carnivora : Canidae : Tomarctus : Tephrocyon hippophagus15.97 - 13.6 Ma
Miocene
Pseudaelurus marshi
species
Animalia : Chordata : Mammalia : Carnivora : Felidae : Pseudaelurus : Pseudaelurus marshi15.97 - 13.6 Ma
Miocene
Pseudaelurus stouti
species
Animalia : Chordata : Mammalia : Carnivora : Felidae : Pseudaelurus : Lynx stouti15.97 - 13.6 Ma
Miocene
Brachypsalis obliquidens
species
Animalia : Chordata : Mammalia : Carnivora : Mustelidae : Brachypsalis : Brachypsalis obliquidens15.97 - 13.6 Ma
Miocene
Leptarctus oregonensis
species
Animalia : Chordata : Mammalia : Carnivora : Mustelidae : Leptarctus : Leptarctus oregonensis15.97 - 13.6 Ma
Miocene
Arctonasua minima
species
Animalia : Chordata : Mammalia : Carnivora : Procyonidae : Arctonasua : Arctonasua minima15.97 - 13.6 Ma
Miocene
Bassariscus minimus
species
Animalia : Chordata : Mammalia : Carnivora : Procyonidae : Bassariscus : Bassariscus minimus15.97 - 13.6 Ma
Miocene
Probassariscus matthewi
species
Animalia : Chordata : Mammalia : Carnivora : Procyonidae : Probassariscus : Probassariscus matthewi15.97 - 13.6 Ma
Miocene
Myotis sp.
genus
Animalia : Chordata : Mammalia : Chiroptera : Vespertilionidae : Myotis15.97 - 13.6 Ma
Miocene
Hypolagus parviplicatus
species
Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Hypolagus : Hypolagus parviplicatus15.97 - 13.6 Ma
Miocene
Pronotolagus albus
species
Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Pronotolagus : Pronotolagus albus15.97 - 13.6 Ma
Miocene
Oreolagus nebrascensis
species
Animalia : Chordata : Mammalia : Lagomorpha : Ochotonidae : Oreolagus : Oreolagus nebrascensis15.97 - 13.6 Ma
Miocene
Lanthanotherium observatum
species
Animalia : Chordata : Mammalia : Erinaceomorpha : Erinaceidae : Lanthanotherium : Lanthanotherium observatum15.97 - 13.6 Ma
Miocene
Metechinus amplior
species
Animalia : Chordata : Mammalia : Erinaceomorpha : Erinaceidae : Metechinus : Metechinus amplior15.97 - 13.6 Ma
Miocene
Scalopoides hutchisoni
species
Animalia : Chordata : Mammalia : Soricomorpha : Talpidae : Scalopoides : Scalopoides hutchisoni15.97 - 13.6 Ma
Miocene
Plesiosorex greeni
species
Animalia : Chordata : Mammalia : Plesiosoricidae : Plesiosorex : Plesiosorex greeni15.97 - 13.6 Ma
Miocene
Alluvisorex sp.
genus
Animalia : Chordata : Mammalia : Soricomorpha : Soricidae : Alluvisorex15.97 - 13.6 Ma
Miocene
Antesorex wilsoni
species
Animalia : Chordata : Mammalia : Soricomorpha : Soricidae : Limnoecus : Antesorex wilsoni15.97 - 13.6 Ma
Miocene
Pseudotrimylus roperi
species
Animalia : Chordata : Mammalia : Soricomorpha : Soricidae : Pseudotrimylus : Heterosorex roperi15.97 - 13.6 Ma
Miocene
Chalicotheriidae
family
Animalia : Chordata : Mammalia : Perissodactyla : Chalicotheriidae15.97 - 13.6 Ma
Miocene
Tylocephalonyx sp.
genus
Animalia : Chordata : Mammalia : Perissodactyla : Chalicotheriidae : Tylocephalonyx15.97 - 13.6 Ma
Miocene
Anchitherium sp.
genus
Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Anchitherium15.97 - 13.6 Ma
Miocene
Aphelops megalodus
species
Animalia : Chordata : Mammalia : Perissodactyla : Rhinocerotidae : Aphelops : Aceratherium megalodum15.97 - 13.6 Ma
Miocene
Teleoceras medicornutum
species
Animalia : Chordata : Mammalia : Perissodactyla : Rhinocerotidae : Teleoceras : Teleoceras medicornutum15.97 - 13.6 Ma
Miocene
Monosaulax tedi
species
Animalia : Chordata : Mammalia : Rodentia : Castoridae : Monosaulax : Monosaulax tedi15.97 - 13.6 Ma
Miocene
Copemys lindsayi
species
Animalia : Chordata : Mammalia : Rodentia : Muridae : Copemys : Copemys lindsayi15.97 - 13.6 Ma
Miocene
Leptodontomys stirtoni
species
Animalia : Chordata : Mammalia : Rodentia : Eomyidae : Leptodontomys : Leptodontomys stirtoni15.97 - 13.6 Ma
Miocene
Mioheteromys subterior
species
Animalia : Chordata : Mammalia : Rodentia : Heteromyidae : Mioheteromys : Mioheteromys subterior15.97 - 13.6 Ma
Miocene
Mookomys sp.
genus
Animalia : Chordata : Mammalia : Rodentia : Geomyidae : Mookomys15.97 - 13.6 Ma
Miocene
Alphagaulus vetus
species
Animalia : Chordata : Mammalia : Rodentia : Mylagaulidae : Alphagaulus : Alphagaulus vetus15.97 - 13.6 Ma
Miocene
Galbreathia bettae
species
Animalia : Chordata : Mammalia : Rodentia : Mylagaulidae : Galbreathia : Galbreathia bettae15.97 - 13.6 Ma
Miocene
Umbogaulus galushai
species
Animalia : Chordata : Mammalia : Rodentia : Mylagaulidae : Umbogaulus : Umbogaulus galushai15.97 - 13.6 Ma
Miocene
Jimomys labaughi
species
Animalia : Chordata : Mammalia : Rodentia : Florentiamyidae : Jimomys : Jimomys labaughi15.97 - 13.6 Ma
Miocene
Miospermophilus bryanti
species
Animalia : Chordata : Mammalia : Rodentia : Sciuridae : Miospermophilus : Miospermophilus bryanti15.97 - 13.6 Ma
Miocene

References

Frick C. (1937) Horned ruminants of North America, Bulletin of the American Museum of Natural History 69, 1-669
Schultz C. B., Falkenbach C. H. (1940) Merycochoerinae, a new subfamily of oreodonts, Bulletin of the American Museum of Natural History 77 5, 213-306
Schultz C. B., Falkenbach C. H. (1947) Merychyinae, a subfamily of oreodonts, Bulletin of the American Museum of Natural History 88 4, 157-286
Wahlert J. H. (1976) Jimomys labaughi, a new geomyoid rodent from the early Barstovian of North America, American Museum Novitates 2591, 1-6
Rich T. H. V. (1981) Origin and History of the Erinaceinae and Brachyericinae (Mammalia, Insectivora) in North America, Bulletin of the American Museum of Natural History 171 1, 1-116
Baskin J. A. (1982) Tertiary Procyoninae (Mammalia: Carnivora) of North America, Journal of Vertebrate Paleontology 2 1, 71-93
Becker J. J. (1986) An early heron (Aves, Ardeidae, Ardea) from the Middle Miocene of Nebraska, Journal of Paleontology 60 4, 968-970
Becker J. J. (1987) Revision of "Falco" ramenta Wetmore and the Neogene evolution of the Falconidae, Auk 104 2, 270-276
Hunt, Jr. R. M. (1998) Amphicyonidae, 196-227
Korth W. W. (1999) A new species of beaver (Rodentia, Castoridae) from the earliest Barstovian (Miocene) of Nebraska and the phylogeny of Monosaulax Stirton, Paludicola 2 3, 258-264
Wang X., Tedford R. H., et al (1999) Phylogenetic systematics of the Borophaginae (Carnivora: Canidae), Bulletin of the American Museum of Natural History 243, 1-392
Korth W. W. (2000) Review of Miocene (Hemingfordian to Clarendonian) mylagaulid rodents (Mammalia) from Nebraska, Annals of Carnegie Museum 69 4, 227-280
Alroy J. (2002) Synonymies and reidentifications of North American fossil mammals
Coombs M. C. (2004) Moropus merriami in the early Barstovian Lower Snake Creek fauna of Nebraska, with comments on biogeography of North American chalicotheres, Bulletin of the American Museum of Natural History 285, 191-208
Baskin J. A. (2004) Bassariscus and Probassariscus (Mammalia, Carnivora, Procyonidae) from the early Barstovian (Middle Miocene), Journal of Vertebrate Paleontology 24 3, 709-720
Prothero D. R. (2005) The Evolution of North American Rhinoceroses, 1-218
Tedford R. H., Wang X., et al (2009) Phylogenetic Systematics of the North American Fossil Caninae (Carnivora: Canidae), Bulletin of the American Museum of Natural History 325, 1-218 doi:10.1206/574.1
Korth W. W., Evander R. L. (2016) Lipotyphla, Chiroptera, Lagomorpha, and Rodentia (Mammalia) from Observation Quarry, Earliest Barstovian (Miocene), Dawes County, Nebraska, Annals of Carnegie Museum 83 3, 219-254 doi:10.2992/007.083.0301
Calede J. J., Kehl W. A., et al (2017) Craniodental morphology and diet of Leptarctus oregonensis (Mammalia, Carnivora, Mustelidae) from the Mascall Formation (Miocene) of central Oregon, Journal of Paleontology, 1-16 doi:10.1017/jpa.2017.78
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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