PBDB Collection

Trojan Quarry (Miocene of the United States)

Also known as Chan. Bed Sheep Cr. 21; Quarry 2; Quarry 21; Sheep Creek Quarry; Sinclair Q. No. 4

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.0° N, 100.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: subcycle 1 Member (Olcott Formation), Early/Lower Barstovian (16.3 - 12.5 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 18004: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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

Show authors, comments, and common names

Reptilia
Testudines - Trionychidae	"Platypeltis miocaenus n. sp." = Trionyx miocaenus "Platypeltis miocaenus n. sp." = Trionyx miocaenus Matthew 1924 softshell turtle Matthew 1924: trionychid
Crocodylia - Alligatoridae	Alligator thomsoni n. sp.⁴ Alligator thomsoni n. sp.⁴ Mook 1923 alligator
Aves
Anseriformes - Anatidae	Anserinae indet. Anserinae indet. Vigors 1825 goose anatid bird
Mammalia
Carnivora - Canidae	Paracynarctus sinclairi n. sp.⁶, Psalidocyon marianae⁶, "Euoplocyon praedator n. sp." = Euoplocyon brachygnathus, Tomarctus hippophaga n. sp. Paracynarctus sinclairi n. sp.⁶ Wang et al. 1999 bone-crushing dog "Quarry 2" Psalidocyon marianae⁶ Wang et al. 1999 bone-crushing dog "Euoplocyon praedator n. sp." = Euoplocyon brachygnathus Douglass 1903 bone-crushing dog Tomarctus hippophaga n. sp. Matthew and Cook 1909 bone-crushing dog gender corrected by Wang et al. 1999
Carnivora - Mustelidae	Leptarctus oregonensis¹, Sthenictis dolichops n. sp. Leptarctus oregonensis¹ Stock 1930 mustelid carnivore Sthenictis dolichops n. sp. Matthew 1924 mustelid carnivore
Carnivora - Amphicyonidae	Pseudocyon sp.² Pseudocyon sp.² Lartet 1851 bear-dog
Artiodactyla - Camelidae	Procamelus leptocolon Procamelus leptocolon Matthew 1909 camel
Artiodactyla - Merycoidodontidae	"Ticholeptus hypsodus" = Ticholeptus zygomaticus, Merychyus relictus, Brachycrus siouense "Ticholeptus hypsodus" = Ticholeptus zygomaticus Cope 1878 oreodont see Schultz and Falkenbach 1941 under "Quarry 4" Merychyus relictus Matthew and Cook 1909 oreodont see Schultz and Falkenbach 1947, as from "Quarry 4" Brachycrus siouense Sinclair 1915 oreodont described by Schultz and Falkenbach 1940 as from "Sheep Creek Quarry" and "Sinclair Quarry 4"
Perissodactyla - Rhinocerotidae	Teleoceras medicornutum⁵ Teleoceras medicornutum⁵ Osborn 1904 rhinoceros
Perissodactyla - Equidae	Acritohippus isonesus³ Acritohippus isonesus³ Cope 1889 horse Supplemental Table S1
Theriamorpha - Erinaceidae	"Brachyerix incertis n. sp." = Metechinus fergusoni "Brachyerix incertis n. sp." = Metechinus fergusoni Henshaw 1942 hedgehog

¹Baskin 1998; ²Hunt 1998; ³Mihlbachler et al. 2011; ⁴Mook 1923; ⁵Prothero 2005; ⁶Wang et al. 1999