Mantua Lentil (Paleocene of the United States)

Also known as Locality No. 7

Where: Park County, Wyoming (44.3° N, 109.0° W: paleocoordinates 51.1° N, 85.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Polecat Bench Formation, Puercan (66.0 - 63.3 Ma)

• in a stratigraphically isolated reversed polarity zone interpreted as chron C29r: Butler et al. 1987

Environment/lithology: terrestrial

Primary reference: D. E. Russell. 1967. Le Paleocene continental d'Amerique du nord. Memoires du Museum National d'Histoire Naturelle. Serie C., Sciences de la Terre 16(2):37-99 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14808: authorized by John Alroy, entered by John Alroy on 12.04.1997, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• originally described by Jepsen 1930
list of Van Valen 1978 is repeated by Archibald et al. 1987 without emendation
actual meter level unknown but very close to base of standard Clark's Fork section

not clear what "Conacodon sp." of Russell and Jepsen is
Mammalia
 Cimolesta - Cimolestidae
Procerberus cf. formicarum3 Sloan and Van Valen 1965 eutherian
two forms according to Lillegraven 1969
Procerberus cf. grandis3 Middleton and Dewar 2004 eutherian
 Tribosphenida - Arctocyonidae
Oxyprimus galadrielae n. sp.6 Van Valen 1978 condylarth
Oxyprimus putorius6 Van Valen 1978 condylarth
Baioconodon nordicus1 Jepsen 1930 condylarth
 Ungulata - Periptychidae
Mimatuta minuial n. sp.6 Van Valen 1978 condylarth
includes his type of
Maiorana noctiluca6 Van Valen 1978 condylarth
Hemithlaeus josephi6 Van Valen 1978 condylarth
 Acreodi - Triisodontidae
Eoconodon copanus6 Van Valen 1978 eutherian
 Theriiformes - Herpetotheriidae
Thylacodon pusillus2 Matthew and Granger 1921 marsupial
 Multituberculata - Eucosmodontidae
"Cimexomys gratus" = Stygimys gratus1, Stygimys kuszmauli4
"Cimexomys gratus" = Stygimys gratus1 Jepsen 1930 multituberculate
Stygimys kuszmauli4 Sloan and Van Valen 1965 multituberculate
referred specimens of "S. gratus"
 Multituberculata - Neoplagiaulacidae
Mesodma ambigua n. sp. Jepsen 1940 multituberculate
see Jepsen 1940
 Multituberculata - Taeniolabididae
Catopsalis alexanderi5 Middleton 1982 multituberculate
presumably includes "C. foliatus" of Sloan 1981