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• coordinate based on unpublished field data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: Hell Creek Formation, Lancian (70.6 - 66.0 Ma)

• group of beds-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

Chondrichthyes indet.1 Huxley 1880 cartilaginous fish
 Euselachii -
Rajiformes indet.1 Berg 1940 ray
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus1 Cope 1876 whiptail stingray
 Amiiformes - Amiidae
Amia sp.1 Linnaeus 1766 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.1 Agassiz 1843 gar
 Caudata - Urodela
Urodela indet.1 salamander
Scapherpetontidae indet.1 Auffenberg and Goin 1959 salamander
Scapherpeton tectum1 Cope 1876 salamander
Reptilia indet.1 Laurenti 1768 reptile
 Testudines - Trionychidae
Trionychidae indet.1 Gray 1825 softshell turtle
 Testudines -
Compsemys victa1 Leidy 1856 turtle
 Testudines - Baenidae
? Baenidae indet.1 Cope 1882 turtle
Plesiobaena antiqua1 Lambe 1902 turtle
 Testudines - Adocidae
Adocus sp.1 Cope 1868 turtle
 Testudines - Pantrionychidae
"Plastomeninae indet." = Plastomenidae1, Plastomenus sp.1, Helopanoplia sp.1
"Plastomeninae indet." = Plastomenidae1 Hay 1902 turtle
Plastomenus sp.1 Cope 1873 turtle
Helopanoplia sp.1 Hay 1908 turtle
 Testudines - Panchelydridae
 Sauria -
Sauria indet.1 diapsid
 Dinosauria -
 Theropoda -
 Avetheropoda - Dromaeosauridae
Richardoestesia sp.1 Currie et al. 1990 coelurosaur
Saurornitholestinae indet.2 Longrich and Currie 2009 coelurosaur
UCMP 186960, 187038
Aves indet.1 Linnaeus 1758 bird
 Neornithischia - Ceratopsidae
Ceratopsidae indet.1 Marsh 1888 ceratopsid
 Neornithischia - Hadrosauridae
Hadrosauridae indet.1 Cope 1869 hadrosaurid
 Loricata -
Crocodylia indet.1 crocodilian
 Crocodylia - Crocodylidae
Crocodylidae indet.1 Cuvier 1807 crocodile
 Crocodylia -
Brachychampsa sp.1 Gilmore 1911 crocodilian
 Choristodera -
Champsosaurus sp.1 Cope 1876 choristodere
 Theriiformes - Peradectidae
"Pediomys florencae" = Aletridelphys florencae
"Pediomys florencae" = Aletridelphys florencae Clemens 1966 metatherian
 Didelphimorphia - Stagodontidae
Didelphodon vorax Marsh 1889 marsupial
 Multituberculata - Cimolomyidae
Meniscoessus robustus Marsh 1889 multituberculate
Cimolomys gracilis Marsh 1889 multituberculate
Amphibia indet.1 tetrapod