Wild Horse Basin (Cretaceous of the United States)

Also known as UCMP V-75178

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• coordinate based on unpublished field data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: Upper Member (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: bulk, surface (float), sieve,

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 14653: 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
Gnathostomata
  -
Chondrichthyes indet.2
Chondrichthyes indet.2 Huxley 1880 cartilaginous fish
Chondrichthyes
 Euselachii -
Rajiformes indet.2
Rajiformes indet.2 Berg 1940 ray
 Rajiformes - Rhinobatidae
Myledaphus pustulosus1
Myledaphus pustulosus1 Cook et al. 2014 guitarfish
UCMP 129122, 1 tooth; UCMP 129121, 1 tooth
Gnathostomata
  -
Osteichthyes indet.2
Reptilia
  -
Reptilia indet.2
Reptilia indet.2 Laurenti 1768 reptile
 Dinosauria -
Dinosauria indet.2
 Theropoda -
Theropoda indet.2
 Theropoda - Dromaeosauridae
Saurornitholestinae indet.3, Richardoestesia sp.2
Saurornitholestinae indet.3 Longrich and Currie 2009 maniraptoran
UCMP 186960, 187038
Richardoestesia sp.2 Currie et al. 1990 maniraptoran
Aves
  -
Aves indet.2
Aves indet.2 Linnaeus 1758 bird
Reptilia
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
Hadrosauridae indet.2
Hadrosauridae indet.2 Cope 1869 hadrosaurid
 Loricata -
Crocodylia indet.2
Crocodylia indet.2 crocodilian
 Crocodylia - Alligatoridae
Brachychampsa sp.2
Brachychampsa sp.2 Gilmore 1911 crocodilian
 Crocodylia - Crocodylidae
Crocodylidae indet.2
 Choristodera -
Champsosaurus sp.2
Champsosaurus sp.2 Cope 1876 choristodere
 Sauria -
Sauria indet.2
Sauria indet.2 diapsid
 Testudines - Adocidae
Adocus sp.2
Adocus sp.2 Cope 1868 turtle
 Testudines - Pantrionychidae
"Plastomeninae indet." = Plastomenidae2, Helopanoplia sp.2, Plastomenus sp.2
"Plastomeninae indet." = Plastomenidae2 Hay 1902 turtle
Helopanoplia sp.2 Hay 1908 turtle
Plastomenus sp.2 Cope 1873 turtle
 Testudines - Trionychidae
Trionychidae indet.2
Trionychidae indet.2 Gray 1825 softshell turtle
 Testudines - Chelydridae
Chelydridae indet.2, ? Chelydridae indet.2
Chelydridae indet.2 Swainson 1839 turtle
? Chelydridae indet.2 Swainson 1839 turtle
 Testudinata -
Compsemys victa2
Compsemys victa2 Leidy 1856 turtle
 Testudinata - Baenidae
? Baenidae indet.2, Plesiobaena antiqua2
? Baenidae indet.2 Cope 1882 turtle
Plesiobaena antiqua2 Lambe 1902 turtle
Mammalia
 Tribosphenida - Pediomyidae
"Pediomys florencae" = Protolambda florencae
"Pediomys florencae" = Protolambda florencae Clemens 1966 metatherian
 Tribosphenida - Stagodontidae
Didelphodon vorax
Didelphodon vorax Marsh 1889 metatherian
 Multituberculata - Cimolomyidae
Cimolomys gracilis, Meniscoessus robustus
Cimolomys gracilis Marsh 1889 multituberculate
Meniscoessus robustus Marsh 1889 multituberculate
Amphibia
  -
Amphibia indet.2
Amphibia indet.2 Linnaeus 1758 tetrapod
 Caudata - Urodela
Urodela indet.2, Scapherpetontidae indet.2, Scapherpeton tectum2
Urodela indet.2 salamander
Scapherpetontidae indet.2 Auffenberg and Goin 1959 salamander
Scapherpeton tectum2 Cope 1876 salamander
Actinopteri
 Amiiformes - Amiidae
Amia sp.2
Amia sp.2 Linnaeus 1766 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.2
Lepisosteus sp.2 Agassiz 1843 gar
1Cook et al. 2014; 2Database 2005; 3Larson and Currie 2013