Tomarctus fossil map
Where fossils of Tomarctus 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 | 18.5–9.4 million years ago (Burdigalian to Tortonian) |
| Periods | Neogene |
| Family | Canidae |
| Named by | Cope 1873 |
| Fossil records | 126 occurrences at 22 locations (PBDB) |
| Found in | United States, Canada, Panama, Mexico |
| Rock formations | Olcott, Wood Mountain, txn:41189, Barstow, Pawnee Creek, Fleming |
About Tomarctus
Tomarctus is a genus of borophagine canid which inhabited most of North America during the late Early Miocene to the Early Barstovian age of the Middle Miocene (23—16 million years ago).
Text in “About” is quoted from the Wikipedia article Tomarctus (revision 1348864349), 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: Q2193177.
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