Filikomys fossil map
Where fossils of Filikomys have been found, shown on the Earth as it looked about 75 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 75 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 →
| Group | Early mammals |
|---|---|
| Lived | 83.6–72.2 million years ago (Campanian) |
| Periods | Cretaceous |
| Family | Neoplagiaulacidae |
| Named by | Weaver et al. 2020 |
| Fossil records | 30 occurrences at 13 locations (PBDB) |
| Found in | United States, Canada |
| Rock formations | Judith River, Oldman, Mesaverde, Iron Springs, Two Medicine, Wahweap |
About Filikomys
Filikomys is an extinct genus of mammal from the Campanian of North America. A multituberculate, it demonstrates complex social behaviours were present in these early mammals. The type species is F. primaevus; a second, smaller species, F. minor, has been tentatively assigned to the genus.
Text in “About” is quoted from the Wikipedia article Filikomys (revision 1323841591), 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: Q101095832.
