Janumys fossil map
Where fossils of Janumys 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 | 121.4–93.9 million years ago (Aptian to Cenomanian) |
| Periods | Cretaceous |
| Named by | Eaton and Cifelli 2001 |
| Fossil records | 14 occurrences at 4 locations (PBDB) |
| Found in | United States |
| Rock formations | Cedar Mountain, Cloverly |
About Janumys
Janumys is a genus of extinct mammal of the middle Cretaceous. It was a member of the order of Multituberculata (also extinct). It lived in North America during the Mesozoic era, also known as the "age of the reptiles." It has been provisionally placed within the informal suborder "Plagiaulacida".
The type species, Janumys erebos, was found in the Albian-Cenomanian, Lower-Upper Cretaceous boundary of the Cedar Mountain Formation in Utah (United States).
Text in “About” is quoted from the Wikipedia article Janumys (revision 1289355237), 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: Q3807070.
