Bryceomys fossil map
Where fossils of Bryceomys have been found, shown on the Earth as it looked about 100 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 100 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 | 121.4–72.2 million years ago (Aptian to Campanian) |
| Periods | Cretaceous |
| Named by | Eaton 1995 |
| Fossil records | 40 occurrences at 12 locations (PBDB) |
| Found in | United States |
| Rock formations | Cedar Mountain, Straight Cliffs, Iron Springs, Naturita, Wahweap, Cloverly |
About Bryceomys
Bryceomys is an extinct genus of mammal that lived during the Late Cretaceous period and thus shared the world with dinosaurs. It was a member of the extinct order Multituberculata, within the suborder Cimolodonta and the informal Paracimexomys group. The genus is known only from isolated teeth recovered in Utah, United States. It was named by Eaton J.G. in 1995; the name means "Bryce mouse", after Bryce Canyon National Park.
Text in “About” is quoted from the Wikipedia article Bryceomys (revision 1362828851), 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: Q4980732.
