Ried Coulee 1 (Cretaceous of the United States)

Also known as UCMP V-73090

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• coordinate based on unpublished field data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 14615: 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
  -
Osteichthyes indet.3
Actinopteri
 Esociformes - Esocidae
Estesesox foxi5
Estesesox foxi5 Wilson et al. 1992
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet.3, Lepisosteus occidentalis3
Lepisosteidae indet.3 Cuvier 1825 gar
Lepisosteus occidentalis3 Leidy 1856 gar
 Amiiformes - Amiidae
Amiidae indet.3, Amia uintaensis3, Amia fragosa3
Amiidae indet.3 Huxley 1861 bowfin
Amia uintaensis3 Leidy 1873 bowfin
Amia fragosa3 Jordan 1927 bowfin
Amphibia
  -
Amphibia indet.3
Amphibia indet.3 Linnaeus 1758 tetrapod
 Caudata - Urodela
Urodela indet.3, Scapherpeton tectum3
Urodela indet.3 salamander
Scapherpeton tectum3 Cope 1876 salamander
Reptilia
  -
Reptilia indet.3
Reptilia indet.3 Laurenti 1768 reptile
 Squamata -
Squamata indet.3
Squamata indet.3 squamates
 Testudines -
Testudines indet.3, Cryptodira indet.3
Testudines indet.3 Batsch 1788 turtle
Cryptodira indet.3 Cope 1868 turtle
 Testudines - Trionychidae
Trionychidae indet.3
Trionychidae indet.3 Gray 1825 softshell turtle
 Testudines - Kinosternoidea
Kinosternoidea indet.3
 Testudines - Chelydridae
Chelydridae indet.3
Chelydridae indet.3 Swainson 1839 turtle
 Loricata -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3, Crocodylia indet.3
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3 Gilmore 1910 crocodilian
Crocodylia indet.3 crocodilian
 Crocodylia - Crocodylidae
Crocodylidae indet.3
 Crocodylia -
Alligatoroidea indet.3
 Crocodylia - Alligatoridae
Brachychampsa montana3
Brachychampsa montana3 Gilmore 1911 crocodilian
 Theropoda -
Theropoda indet.3, Theropoda indet.1
Theropoda indet.1 theropod
 Theropoda - Dromaeosauridae
Dromaeosauridae indet.3, Saurornitholestinae indet.4
Dromaeosauridae indet.3 Colbert and Russell 1969 maniraptoran
Saurornitholestinae indet.4 Longrich and Currie 2009 maniraptoran
UCMP 186962
 Ornithischia - Ceratopsidae
Ceratopsidae indet.3, Triceratops sp.3
Ceratopsidae indet.3 Marsh 1888 ceratopsid
Triceratops sp.3 Marsh 1889 ceratopsid
 Choristodera -
Champsosaurus natator3
Champsosaurus natator3 Parks 1933 choristodere
 Choristodera - Champsosauridae
Champsosauridae indet.3
Champsosauridae indet.3 Cope 1876 champsosaur
Mammalia
 Theriamorpha - Stagodontidae
Didelphodon vorax
Didelphodon vorax Marsh 1889 metatherian
 Multituberculata - Neoplagiaulacidae
Mesodma cf. formosa, Mesodma thompsoni
Mesodma cf. formosa Marsh 1889 multituberculate
Mesodma thompsoni Clemens 1964 multituberculate
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus pustulosus2
Myledaphus pustulosus2 Cook et al. 2014 guitarfish
UCMP 146187, 3 teeth; UCMP 145936, 1 tooth
 Hybodontiformes - Lonchidiidae
Lonchidion selachos3
Lonchidion selachos3 Estes 1964 elasmobranch
1Carrano 2025; 2Cook et al. 2014; 3Database 2005; 4Larson and Currie 2013; 5Wilson et al. 1992