Engdahl Anthills 2 (Cretaceous of the United States)

Also known as UCMP V-73076

Where: Garfield County, Montana (47.6° N, 107.1° W: paleocoordinates 54.4° N, 80.2° 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• coordinate based on unpublished field data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; lithology not reported

Size class: mesofossils

Reposited in the UCMP

Collection methods: bulk, surface (float), anthill, 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 14534: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Gnathostomata
  -
Reptilia
  -
Reptilia indet.3 Laurenti 1768 reptile
 Ornithischia - Ankylosauridae
Ankylosaurus magniventris1 Brown 1908 ankylosaurid
UCMP 120195
 Theropoda -
 Theropoda - Coeluridae
Coeluridae indet.3 Marsh 1881 coelurid
 Theropoda - Caenagnathidae
Chirostenotes sp.3 Gilmore 1924 maniraptoran
 Theropoda -
cf. Paronychodon lacustris4 Cope 1876 maniraptoran
 Loricata -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3 Gilmore 1910 crocodilian
 Crocodylia - Alligatoridae
Brachychampsa montana3 Gilmore 1911 crocodilian
 Sauria -
 Testudinata - Baenidae
Thescelus insiliens3 Hay 1908 turtle
 Squamata - Anguidae
Odaxosaurus piger3 Gilmore 1928 squamates
 Squamata - Chamopsiidae
Chamops segnis3 Marsh 1892 squamates
Mammalia
 Theriamorpha - Gypsonictopidae
Gypsonictops cf. illuminatus Lillegraven 1969 eutherian
 Theriamorpha - Pediomyidae
"Pediomys hatcheri" = Protolambda hatcheri
"Pediomys hatcheri" = Protolambda hatcheri Osborn 1898 metatherian
 Multituberculata - Neoplagiaulacidae
Mesodma thompsoni Clemens 1964 multituberculate
 Multituberculata - Cimolomyidae
Essonodon browni Simpson 1927 multituberculate
Meniscoessus robustus Marsh 1889 multituberculate
Amphibia
 Proteida - Batrachosauroididae
Opisthotriton kayi3 Auffenberg 1961 salamander
 Caudata - Urodela
Habrosaurus dilatus3 Gilmore 1928 siren
Scapherpeton tectum3 Cope 1876 salamander
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis3 Leidy 1856 gar
 Amiiformes - Amiidae
Amia fragosa3 Jordan 1927 bowfin
Amia uintaensis3 Leidy 1873 bowfin
 Aspidorhynchiformes - Aspidorhynchidae
 Teleostei -
Perciformes indet.3 Bleeker 1859 perch-like fish
Chondrichthyes
 Hybodontiformes - Lonchidiidae
Lonchidion selachos3 Estes 1964 elasmobranch
 Rajiformes - Rhinobatidae
Myledaphus pustulosus2 Cook et al. 2014 guitarfish
UCMP 120163, 1 denticle; UCMP 120162, 97 complete and partial teeth