Microtomarctus fossil map
Where fossils of Microtomarctus have been found, shown on the Earth as it looked about 15 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 15 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 | 18.5–5.333 million years ago (Burdigalian to Messinian) |
| Periods | Neogene |
| Family | Canidae |
| Named by | Wang et al. 1999 |
| Fossil records | 70 occurrences at 14 locations (PBDB) |
| Found in | United States |
| Rock formations | Barstow, Olcott, Tesuque, Pawnee Creek, txn:41189, Fleming |
About Microtomarctus
Microtomarctus is an extinct monospecific genus of the Borophaginae subfamily of canids native to North America. It lived during the Early to Middle Miocene, and existed for approximately 7 million years. Fossil specimens have been found in Nebraska, coastal southeast Texas, California, New Mexico, Nevada, and Colorado. It was an intermediate-size canid, and more predaceous than earlier borophagines.
Like some other borophagines it had powerful, bone-crushing jaws and teeth.
Text in “About” is quoted from the Wikipedia article Microtomarctus (revision 1326621073), 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: Q6840433.
