PBDB Collection

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: Fort Union Formation, Puercan (66.0 - 63.3 Ma)

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

•

•Earlier literature referred to this as the 'Polecat Bench Formation'

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

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

Show authors, comments, and common names

Mammalia
Cimolesta - Cimolestidae	Procerberus cf. formicarum³, Procerberus cf. grandis³ Procerberus cf. formicarum³ Sloan and Van Valen 1965 eutherian two forms according to Lillegraven 1969 Procerberus cf. grandis³ Middleton and Dewar 2004 eutherian
Acreodi - Triisodontidae	Eoconodon copanus⁶ Eoconodon copanus⁶ Van Valen 1978 placental
Procreodi - Arctocyonidae	Maiorana noctiluca⁶, Baioconodon nordicus¹, Mimatuta minuial n. sp.⁶, Oxyprimus putorius⁶, Oxyprimus galadrielae n. sp.⁶ Maiorana noctiluca⁶ Van Valen 1978 condylarth Baioconodon nordicus¹ Jepsen 1930 condylarth Mimatuta minuial n. sp.⁶ Van Valen 1978 condylarth includes his type of Oxyprimus putorius⁶ Van Valen 1978 condylarth Oxyprimus galadrielae n. sp.⁶ Van Valen 1978 condylarth
Tribosphenida - Periptychidae	Hemithlaeus josephi⁶ Hemithlaeus josephi⁶ Van Valen 1978 condylarth
Tribosphenida - Herpetotheriidae	Thylacodon pusillus² Thylacodon pusillus² Matthew and Granger 1921 marsupial
Multituberculata - Eucosmodontidae	Stygimys kuszmauli⁴, "Cimexomys gratus" = Stygimys gratus¹ Stygimys kuszmauli⁴ Sloan and Van Valen 1965 multituberculate referred specimens of "S. gratus" "Cimexomys gratus" = Stygimys gratus¹ Jepsen 1930 multituberculate
Multituberculata - Taeniolabididae	Catopsalis alexanderi⁵ Catopsalis alexanderi⁵ Middleton 1982 multituberculate presumably includes "C. foliatus" of Sloan 1981
Multituberculata - Neoplagiaulacidae	Mesodma ambigua n. sp. Mesodma ambigua n. sp. Jepsen 1940 multituberculate see Jepsen 1940

¹Alroy 2002; ²Archibald et al. 1987; ³Clemens 2017; ⁴Lofgren 1995; ⁵Middleton 1982; ⁶Van Valen 1978