🦕 Prehistoric World Map

Cimolodon fossil map

Where fossils of Cimolodon 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 →

Cimolodon
Image: Thomas H. Rich, Patricia Vickers−Rich, Timothy F. Flannery, Benjamin P. Kear, David J. Cantrill, Patricia Komarower, Les, CC BY-SA 4.0, via Wikimedia Commons
GroupEarly mammals
Lived106.3–60.9 million years ago (Albian to Selandian)
PeriodsCretaceous, Paleogene
FamilyCimolodontidae
Named byMarsh 1889
Fossil records266 occurrences at 80 locations (PBDB)
Found inUnited States, Canada
Rock formationsLance, Hell Creek, Wahweap, Milk River, Kaiparowits, Frenchman

About Cimolodon

Cimolodon is an extinct genus of cimolodontid mammal in the order Multituberculata. Specimens are known from the Late Cretaceous of North America.

Text in “About” is quoted from the Wikipedia article Cimolodon (revision 1352929855), 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: Q780915.

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