Rex Hill Locality (Cretaceous of the United States)

Also known as UCMP V-75161

Where: Garfield County, Montana (47.6° N, 107.2° W: paleocoordinates 54.4° N, 80.3° 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• coordinate based on unpublished field data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; siltstone

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 14613: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

 Myliobatiformes - Dasyatidae
Myledaphus bipartitus1 Cope 1876 whiptail stingray
 Acipenseriformes - Acipenseridae
Acipenser sp.1 Linnaeus 1758 sturgeon
 Amiiformes - Amiidae
Amia sp.1 Linnaeus 1766 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.1 Agassiz 1843 gar
 Caudata - Urodela
Scapherpeton tectum1 Cope 1876 salamander
 Testudines - Trionychidae
Trionychidae indet.1 Gray 1825 softshell turtle
 Testudines -
Compsemys victa1 Leidy 1856 turtle
 Testudines - Baenidae
Baenidae indet.1 Cope 1882 turtle
 Archosauria -
 Avetheropoda - Dromaeosauridae
Saurornitholestinae indet.2 Longrich and Currie 2009 coelurosaur
UCMP 186957
Aves indet.1 Linnaeus 1758 bird
 Neornithischia - Ceratopsidae
Ceratopsidae indet.1 Marsh 1888 ceratopsid
 Crocodylia - Crocodylidae
Crocodylidae indet.1 Cuvier 1807 crocodile
 Squamata -
Squamata indet.1 Oppel 1811 squamates
 Choristodera -
Champsosaurus sp.1 Cope 1876 choristodere
 Multituberculata - Cimolomyidae
Meniscoessus sp.1 Cope 1882 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate