Xenocranium fossil map
Where fossils of Xenocranium have been found, shown on the Earth as it looked about 30 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 30 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 | 37–33.9 million years ago (Priabonian) |
| Periods | Paleogene |
| Family | Epoicotheriidae |
| Named by | Colbert 1942 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | United States |
| Rock formations | White River |
About Xenocranium
Xenocranium ("strange skull") is an extinct monotypic genus of placental mammal from extinct paraphyletic subfamily Epoicotheriinae within extinct paraphyletic family Epoicotheriidae in extinct order Palaeanodonta, that lived in North America during the late Eocene.
Text in “About” is quoted from the Wikipedia article Xenocranium (revision 1365040323), 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: Q21369124.
