Billy Creek 2 (Cretaceous of the United States)

Also known as UCMP V-75173

Where: Garfield County, Montana (47.6° N, 107.3° W: paleocoordinates 54.5° N, 80.4° 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• coordinate based on unpublished field data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: bulk, 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 14513: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• see note on Billy Creek 1
Reptilia
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Theropoda -
 Theropoda - Coeluridae
"Coelurosauridae indet." = Coeluridae2
"Coelurosauridae indet." = Coeluridae2 Marsh 1881 coelurid
 Theropoda -
Paronychodon sp.2 Cope 1876 maniraptoran
 Theropoda - Dromaeosauridae
Saurornitholestinae indet.3 Longrich and Currie 2009 maniraptoran
UCMP 187039
 Theropoda - Ornithomimidae
Ornithomimidae indet.2 Marsh 1890 ornithomimid
 Loricata -
Crocodylia indet.2 crocodilian
Crocodylia indet.1 crocodilian
 Crocodylia - Crocodylidae
 Crocodylia - Alligatoridae
Brachychampsa sp.2 Gilmore 1911 crocodilian
 Testudinata -
Compsemys sp.2 Leidy 1856 turtle
Compsemys victa2 Leidy 1856 turtle
 Testudinata - Baenidae
Baenidae indet.2 Cope 1882 turtle
 Testudines - Chelydridae
Chelydridae indet.2 Swainson 1839 turtle
 Testudines - Adocidae
Adocus sp.2 Cope 1868 turtle
 Testudines - Nanhsiungchelyidae
Basilemys sp.2 Hay 1902 turtle
 Testudines - Pantrionychidae
"Plastomeninae indet." = Plastomenidae2, Helopanoplia sp.2
"Plastomeninae indet." = Plastomenidae2 Hay 1902 turtle
Helopanoplia sp.2 Hay 1908 turtle
 Testudines - Trionychidae
Trionychidae indet.2 Gray 1825 softshell turtle
 Squamata -
Squamata indet.2 squamates
Mammalia
  -
Mammalia indet.2 Linnaeus 1758 mammal
 Theriamorpha -
Theria indet.2 Parker and Haswell 1897 mammal
 Theriamorpha - Stagodontidae
Didelphodon vorax Marsh 1889 metatherian
Amphibia
 Caudata - Urodela
Habrosaurus sp.2 Gilmore 1928 siren
Scapherpeton sp.2 Cope 1876 salamander
Scapherpeton tectum2 Cope 1876 salamander
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.2 Agassiz 1843 gar
 Amiiformes - Amiidae
Amia sp.2 Linnaeus 1766 bowfin
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus2 Cope 1876 guitarfish