Dry Fork Coulee (Cretaceous of the United States)

Also known as UCMP V-73103

Where: Garfield County, Montana (47.5° N, 107.0° W: paleocoordinates 54.3° N, 80.1° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone and mudstone

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 14525: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Actinopteri
 Amiiformes - Amiidae
Amia sp.3, Melvius thomasi3
Amia sp.3 Linnaeus 1766 bowfin
Melvius thomasi3 Bryant 1987 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.3
Lepisosteus sp.3 Agassiz 1843 gar
Amphibia
 Caudata - Urodela
Urodela indet.3, Scapherpeton tectum3
Urodela indet.3 salamander
Scapherpeton tectum3 Cope 1876 salamander
Reptilia
 Theropoda -
Theropoda indet.3, Theropoda indet.2
Theropoda indet.2 theropod
 Theropoda - Dromaeosauridae
Richardoestesia cf. isosceles4
Richardoestesia cf. isosceles4 Sankey 2001 maniraptoran
UCMP 186842
 Ornithischia - Hadrosauridae
Hadrosauridae indet.3
Hadrosauridae indet.3 Cope 1869 hadrosaurid
 Loricata -
Crocodylia indet.1
Crocodylia indet.1 crocodilian
 Crocodylia - Crocodylidae
Crocodylidae indet.3
 Crocodylia - Alligatoridae
Brachychampsa sp.3
Brachychampsa sp.3 Gilmore 1911 crocodilian
 Sauria -
Sauria indet.3
Sauria indet.3 diapsid
 Testudines -
Testudines indet.3
Testudines indet.3 Batsch 1788 turtle
 Testudines - Adocidae
Adocus sp.3
Adocus sp.3 Cope 1868 turtle
 Testudines - Trionychidae
Trionychidae indet.3
Trionychidae indet.3 Gray 1825 softshell turtle
 Testudines - Pantrionychidae
Helopanoplia distincta3
Helopanoplia distincta3 Hay 1908 turtle
 Testudinata -
Compsemys victa3
Compsemys victa3 Leidy 1856 turtle
Mammalia
 Theriamorpha - Stagodontidae
Didelphodon vorax
Didelphodon vorax Marsh 1889 metatherian
 Multituberculata - Cimolomyidae
Meniscoessus robustus
Meniscoessus robustus Marsh 1889 multituberculate
1Alroy 2007; 2Carrano 2025; 3Database 2005; 4Sankey 2008