Hiatt Locality (Paleocene of the United States)

Also known as JHH L5418

Where: Dawson County, Montana (47.1° N, 104.8° W: paleocoordinates 53.1° N, 79.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: lower Ludlow Member (Fort Union Formation), Puercan (66.0 - 63.3 Ma)

• within a sandstone with no paleomagnetic data just above C29r and just below C29n

• bed-level stratigraphic resolution

Environment/lithology: "channel"; sandstone

Primary reference: J. P. Hunter. 1997. Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana. Contributions to Geology, University of Wyoming 32(1):61-114 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14744: authorized by John Alroy, entered by John Alroy on 05.08.1996

Creative Commons license: CC BY (attribution)

Taxonomic list

• NISP 15
Show authors, comments, and common names
Mammalia
 Procreodi - Arctocyonidae
Baioconodon cf. nordicus, ? Carcinodon sp.
Baioconodon cf. nordicus Jepsen 1930 condylarth
"nordicum"
? Carcinodon sp. Scott 1892 condylarth
 Tribosphenida - Periptychidae
Oxyacodon ferronensis, Tinuviel eurydice
Oxyacodon ferronensis Archibald et al. 1983 condylarth
Tinuviel eurydice Van Valen 1978 condylarth
 Multituberculata - Eucosmodontidae
Eucosmodontidae indet.
Eucosmodontidae indet. Jepsen 1940 multituberculate
 Multituberculata - Neoplagiaulacidae
Neoplagiaulacidae indet., Neoplagiaulax sp., Neoplagiaulax cf. kremnus
Neoplagiaulacidae indet. Ameghino 1890 multituberculate
Neoplagiaulax sp. Lemoine 1882 multituberculate
Neoplagiaulax cf. kremnus Johnston and Fox 1984 multituberculate