Gynnoskus (Cretaceous of the United States)

Also known as UCMP V-73089

Where: Garfield County, Montana (47.6° N, 106.3° W: paleocoordinates 54.2° N, 79.3° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Hell Creek Formation, Lancian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

Size class: mesofossils

Reposited in the UCMP

Collection methods: surface (float),

Primary reference: J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14559: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Amiiformes - Amiidae
Amia fragosa3 Jordan 1927 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis3 Leidy 1856 gar
Osteichthyes
 Caudata - Urodela
Scapherpeton tectum3 Cope 1876 salamander
Reptilia
 Testudines -
Cryptodira indet.3 Cope 1868 turtle
 Theropoda -
 Avetheropoda - Dromaeosauridae
Dromaeosauridae indet.1 Colbert and Russell 1969 coelurosaur
UCMP 125238
 Avetheropoda - Coeluridae
Coeluridae indet.3 Marsh 1881 coelurid
 Neornithischia - Ceratopsidae
Ceratopsidae indet.3 Marsh 1888 ceratopsid
 Neornithischia - Hadrosauridae
Hadrosauridae indet.3 Cope 1869 hadrosaurid
 Crocodylia -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3 Gilmore 1910 crocodilian
 Crocodylia - Alligatoridae
Brachychampsa montana3 Gilmore 1911 crocodilian
 Squamata - Teiidae
Teiidae indet.3 Gray 1827 squamates
Mammalia
 Multituberculata - Cimolomyidae
Meniscoessus robustus Marsh 1889 multituberculate