Worm Coulee 1 (Paleocene of the United States)

Also known as UCMP V-74111; V74111

Where: Garfield County, Montana (47.6° N, 107.0° W: paleocoordinates 54.0° N, 81.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Tullock Formation, Puercan (66.0 - 63.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: coarse channel fill; sandstone

Size class: mesofossils

Reposited in the UCMP

Collection methods: bulk, surface (float), 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: biostratigraphic analysis

PaleoDB collection 14798: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Patricia Holroyd and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Proteida - Batrachosauroididae
Opisthotriton kayi2 Auffenberg 1961 salamander
 Caudata - Urodela
Proamphiuma cretacea2 Estes 1969 salamander
Habrosaurus dilatus2 Gilmore 1928 siren
Scapherpeton tectum2 Cope 1876 salamander
Lisserpeton bairdi2 Estes 1965 salamander
Mammalia
 Cimolesta - Cimolestidae
Procerberus formicarum Sloan and Van Valen 1965 eutherian
 Tribosphenida - Arctocyonidae
Oxyprimus erikseni Van Valen 1978 condylarth
Protungulatum cf. donnae Sloan and Van Valen 1965 condylarth
Baioconodon cf. engdahli1 Archibald 1982 condylarth
 Ungulata - Periptychidae
Mimatuta morgoth Van Valen 1978 condylarth
 Theriiformes - Herpetotheriidae
Thylacodon montanensis n. sp.4 Williamson et al. 2012 marsupial
 Multituberculata -
Cimexomys minor Sloan and Van Valen 1965 multituberculate
 Multituberculata - Eucosmodontidae
"Cimexomys gratus" = Stygimys gratus1 Jepsen 1930 multituberculate
Stygimys aff. kuszmauli Sloan and Van Valen 1965 multituberculate
this specimen is close to S. cupressus according to Fox 1989, but is S. kuszmauli sensu stricto according to Lofgren 1995
 Multituberculata - Neoplagiaulacidae
"Mesodma garfieldensis n. sp." = Mesodma thompsoni
"Mesodma garfieldensis n. sp." = Mesodma thompsoni Clemens 1964 multituberculate
 Multituberculata - Microcosmodontidae
Acheronodon garbani n. sp. Archibald 1982 multituberculate
 Multituberculata - Taeniolabididae
Catopsalis alexanderi3 Middleton 1982 multituberculate