Trochu (KUA-22) (Cretaceous of Canada)

Where: Alberta, Canada (51.8° N, 113.0° W: paleocoordinates 59.5° N, 84.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Scollard Formation, Lancian (70.6 - 66.0 Ma)

Environment/lithology: terrestrial; claystone

• "light clay"

Size class: mesofossils

Collected by J. Lillegraven in 1967

Collection methods: bulk, surface (float), surface (in situ), sieve

Primary reference: J. A. Lillegraven. 1969. Latest Cretaceous mammals of upper part of Edmonton Formation of Alberta, Canada, and review of marsupial-placental dichotomy in mammalian evolution. University of Kansas Paleontological Contributions 50:1-122 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14634: authorized by John Alroy, entered by John Alroy on 26.07.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Multituberculata - Cimolomyidae
Cimolomys gracilis Marsh 1889 multituberculate
 Multituberculata - Ptilodontidae
Ptilodontidae indet. Cope 1887 multituberculate
specimen 3739; provenance of additional specimen 3304 not specified
 Multituberculata - Neoplagiaulacidae
Mesodma thompsoni Clemens 1964 multituberculate
Mesodma formosa Marsh 1889 multituberculate
Mesodma hensleighi Lillegraven 1969 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate
 Theriamorpha - Gypsonictopidae
Gypsonictops illuminatus Lillegraven 1969 eutherian
 Cimolesta - Cimolestidae
"Cimolestes cerberoides" = Ambilestes cerberoides
"Cimolestes cerberoides" = Ambilestes cerberoides Lillegraven 1969 eutherian
 Theriamorpha - Zhelestidae
Alostera saskatchewanensis2 Fox 1989 eutherian
UALVP 3685
 Theriamorpha - Pediomyidae
Pediomys elegans, "Pediomys krejcii" = Leptalestes krejcii
Pediomys elegans Marsh 1889 metatherian
"Pediomys krejcii" = Leptalestes krejcii Clemens 1966 metatherian
 Theriamorpha - Alphadontidae
Alphadon sp.1, "Alphadon rhaister" = Turgidodon rhaister
Alphadon sp.1 Simpson 1927 metatherian
"Alphadon rhaister" = Turgidodon rhaister Clemens 1966 metatherian