PBDB Collection

Trojan Quarry: Early/Lower Barstovian, Nebraska

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Reptilia - Anseriformes - Anatidae

	Anserinae indet. Vigors 1825
	anatid bird
Reptilia

	Alligator thomsoni n. sp. Mook 1923	Mook 1923
	(1 measurement)
Reptilia - Testudines - Trionychidae

	Platypeltis miocaenus n. sp. Matthew 1924
	recombined as Trionyx miocaenus
	Matthew 1924: trionychid
Mammalia - Erinaceidae

	Brachyerix incertis n. sp. (Matthew 1924)
	synonym of Metechinus fergusoni
Mammalia - Carnivora - Amphicyonidae

	Pseudocyon sp. Lartet 1851	Hunt 1998
Mammalia - Carnivora - Mustelidae

	Leptarctus primus Leidy 1856
	= Leptarctus oregonensis Stock 1930	Baskin 1998

	Sthenictis dolichops n. sp. Matthew 1924
Mammalia - Carnivora - Canidae

	Tomarctus hippophaga n. sp. (Matthew and Cook 1909)
	gender corrected by Wang et al. 1999

	Euoplocyon praedator n. sp. Matthew 1924
	synonym of Euoplocyon brachygnathus

	Paracynarctus sinclairi n. sp. Wang et al. 1999	Wang et al. 1999
	"Quarry 2"

	Psalidocyon marianae Wang et al. 1999	Wang et al. 1999
Mammalia - Merycoidodontidae

	Brachycrus siouense (Sinclair 1915)
	described by Schultz and Falkenbach 1940 as from "Sheep Creek Quarry" and "Sinclair Quarry 4"

	Merychyus relictus (Matthew and Cook 1909)
	see Schultz and Falkenbach 1947, as from "Quarry 4"

	Ticholeptus hypsodus Loomis 1924
	synonym of Ticholeptus zygomaticus
	see Schultz and Falkenbach 1941 under "Quarry 4"
Mammalia - Camelidae

	Procamelus leptocolon (Matthew 1909)
Mammalia - Perissodactyla - Equidae

	Acritohippus isonesus (Cope 1889)	Mihlbachler et al. 2011
	Supplemental Table S1
Mammalia - Perissodactyla - Rhinocerotidae

	Teleoceras medicornutum Osborn 1904	Prothero 2005
see common names

Geography

Country:	United States	State/province:	Nebraska	County:	Sioux
Coordinates:	42.4° North, 103.8° West (view map)
Paleocoordinates:	43.0° North, 100.6° West
Basis of coordinate:	based on political unit
Geographic resolution:	small collection

Time

Period:	Neogene	Epoch:	Miocene
10 m.y. bin:	Cenozoic 5
*Period:	Tertiary
Key time interval:	Early/Lower Barstovian
Age range of interval:	16.30000 - 12.50000 m.y. ago
* legacy (obsolete) database fields

Stratigraphy

Formation:	Olcott	Member:	subcycle 1
Local section:	Snake	Local bed:	3
Local order:	bottom to top

Lithology and environment

Primary lithology:	not reported
Environment:	terrestrial indet.

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils,mesofossils

Collection methods and comments

Reason for describing collection:	biostratigraphic analysis
Taxonomic list comments:may include "Cosoryx (Paracosoryx)" postcrania of Frick 1937 from "Quarry C, 1921"; Thomson did collect at Trojan Quarry in this year, but Skinner et al. mention no "Quarry C" in his collections

Metadata

Also known as:	Chan. Bed Sheep Cr. 21; Quarry 2; Quarry 21; Sheep Creek Quarry; Sinclair Q. No. 4
Database number:	18004
Authorizer:	J. Alroy, J. Marcot	Enterer:	J. Alroy, J. Marcot
Modifier:	G. Varnham	Research group:	vertebrate
Created:	1993-02-18 00:00:00	Last modified:	2022-04-27 08:19:50
Access level:	the public	Released:	1993-02-18 00:00:00
Creative Commons license:	CC BY

Reference information

Primary reference:

3175.

M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294		J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
6235		J. A. Baskin. 1998. Mustelidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary mammals of North America 152-173 [J. Alroy/J. Alroy/J. Alroy]
1977		R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy]
61275		M. C. Mihlbachler, F. Rivals, N. Solounias and G. M. Semprebon. 2011. Dietary Change and Evolution of Horses in North America. Science 331:1178-1181 [J. Marcot/J. Marcot]
23584		C. C. Mook. 1923. A new species of alligator from the Snake Creek Beds. American Museum Novitates 73:1-13 [J. Alroy/J. Alroy/J. Alroy]
51726		D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot]
3558		X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]