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 43.1° N, 99.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: subcycle 1 Member (Olcott Formation), Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

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
Reptilia
 Testudines - Trionychidae
"Platypeltis miocaenus n. sp." = Trionyx miocaenus
"Platypeltis miocaenus n. sp." = Trionyx miocaenus Matthew 1924 softshell turtle
Matthew 1924: trionychid
Aves
 Anseriformes - Anatidae
Anserinae indet. Vigors 1825 goose
anatid bird
Reptilia
 Crocodylia - Alligatoridae
Alligator thomsoni n. sp.5 Mook 1923 alligator
Mammalia
 Lipotyphla - Erinaceidae
Brachyerix incertis n. sp. Matthew 1924 hedgehog
 Perissodactyla - Rhinocerotidae
Teleoceras medicornutum6 Osborn 1904 rhinoceros
 Perissodactyla - Equidae
Acritohippus isonesus4 Cope 1889 horse
Supplemental Table S1
 Carnivora - Amphicyonidae
Pseudocyon sp.3 Lartet 1851 bear-dog
 Carnivora - Mustelidae
Leptarctus oregonensis2 Stock 1930 mustelid carnivore
Sthenictis dolichops n. sp. Matthew 1924 mustelid carnivore
 Carnivora - Canidae
Paracynarctus sinclairi n. sp.7 Wang et al. 1999 bone-crushing dog
"Quarry 2"
Psalidocyon marianae7 Wang et al. 1999 bone-crushing dog
Euoplocyon brachygnathus1 Douglass 1903 bone-crushing dog
Tomarctus hippophaga n. sp. Matthew and Cook 1909 bone-crushing dog
gender corrected by Wang et al. 1999
 Ungulata - Merycoidodontidae
Ticholeptus zygomaticus1 Cope 1878 oreodont
Brachycrus siouense Sinclair 1915 oreodont
described by Schultz and Falkenbach 1940 as from "Sheep Creek Quarry" and "Sinclair Quarry 4"
Merychyus relictus Matthew and Cook 1909 oreodont
see Schultz and Falkenbach 1947, as from "Quarry 4"
 Ungulata - Camelidae
Procamelus leptocolon Matthew 1909 camel