🦕 Prehistoric World Map

Baiotomeus fossil map

Where fossils of Baiotomeus have been found, shown on the Earth as it looked about 66 million years ago and on today’s map.

Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 66 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

GroupEarly mammals
Lived66–57.5 million years ago (Danian to Thanetian)
PeriodsPaleogene
FamilyPtilodontidae
Named byKrause 1987
Fossil records40 occurrences at 16 locations (PBDB)
Found inUnited States, Canada
Rock formationsFort Union, Paskapoo, Porcupine Hills, Hanna, Coalspur, txn:39810

About Baiotomeus

Baiotomeus is a genus of mammals from the extinct order of Multituberculata. It is known from the Paleocene of North America.

The genus Baiotomeus was formally named by Krause in 1987 (Krause, 1987), and has also been known as Mimetodon (partly), Neoplagiaulax (partly), and Ptilodus (partly).

Text in “About” is quoted from the Wikipedia article Baiotomeus (revision 1368549945), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q730287.

More early mammals