Quarry 9, Pit A (AMNH/YPM) (Jurassic to of the United States)

Where: Albany County, Wyoming (41.9° N, 106.0° W: paleocoordinates 37.5° N, 52.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Brushy Basin Member (Morrison Formation), Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• about 80 feet below Morrison-Cloverly contact

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray claystone and lithified sandstone

• "variegated gray claystones and sandstones, with occasional chert lenses."

Size classes: macrofossils, mesofossils

Collected in 1968-1970; reposited in the AMNH, YPM

Collection methods: quarrying, mechanical, sieve,

Primary reference: D. R. Prothero. 1981. New Jurassic mammals from Como Bluff, Wyoming, and the interrelationships of non-tribosphenic Theria. Bulletin of the American Museum of Natural History 167(5):277-326 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39426: authorized by Matthew Carrano, entered by Matthew Carrano on 28.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Actinopteri
 Halecomorphi - Ophiopsiidae
Ophiopsis sp. Agassiz 1843
Osteichthyes
 Salientia -
Reptilia
 Testudines - Pleurosternidae
Glyptops plicatulus Cope 1877 turtle
 Avetheropoda -
 Loricata - Goniopholididae
Goniopholis sp. Owen 1842 crocodilian
 Squamata - Dorsetisauridae
Dorsetisaurus sp. Hoffstetter 1967 lizard
 Squamata - Paramacellodidae
Paramacellodus sp. Hoffstetter 1967 lizard
 Choristodera -
Cteniogenys antiquus Gilmore 1928 choristodere
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal
 Eutriconodonta - Triconodontidae
Triconodontidae indet. Marsh 1887 mammal
 Theriiformes -
 Theriiformes - Dryolestidae
Laolestes eminens Simpson 1927 mammal
"Melanodon goodrichi" = Laolestes goodrichi Simpson 1929 mammal
Dryolestes priscus Marsh 1878 mammal
Amblotherium sp. Owen 1871 mammal
"Amblotherium debilis" = Amblotherium gracilis Marsh 1879 mammal
Comotherium richi Prothero 1981 mammal
 Docodonta - Docodontidae
Docodon victor Marsh 1880 dodocont
 Multituberculata - Plagiaulacidae
Plagiaulacidae indet. Gill 1872 multituberculate