Jordan Coulee (Cretaceous of the United States)

Also known as UCMP V-73093

Where: Garfield County, Montana (47.5° N, 106.9° W: paleocoordinates 54.3° N, 80.0° 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• coordinate based on unpublished field data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: 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 14574: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Gnathostomata
  -
Amphibia
 Caudata - Urodela
Urodela indet.2 salamander
Scapherpeton tectum2 Cope 1876 salamander
 Proteida - Batrachosauroididae
Opisthotriton sp.2 Auffenberg 1961 salamander
Reptilia
  -
Reptilia indet.2 Laurenti 1768 reptile
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Ornithischia -
Thescelosaurus sp.2 Gilmore 1913 ornithopod
 Theropoda -
 Theropoda - Dromaeosauridae
Richardoestesia cf. gilmorei3 Currie et al. 1990 maniraptoran
UCMP 123543
 Theropoda - Caenagnathidae
Chirostenotes sp.2 Gilmore 1924 maniraptoran
 Crocodylia - Alligatoridae
Brachychampsa montana2 Gilmore 1911 crocodilian
 Loricata -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii2
"Leidyosuchus sternbergi" = Borealosuchus sternbergii2 Gilmore 1910 crocodilian
 Squamata - Chamopsiidae
Leptochamops denticulatus2 Gilmore 1928 squamates
Mammalia
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate
Actinopteri
 Amiiformes - Amiidae
Amia fragosa2 Jordan 1927 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis2 Leidy 1856 gar
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus pustulosus1 Cook et al. 2014 guitarfish
UCMP 123530, 1 denticle