Tremarctos fossil map
Where fossils of Tremarctos have been found, shown on the Earth as it looked about 0 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 0 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 | 4.7 million years ago to the present (Zanclean to Holocene) |
| Periods | Neogene, Quaternary |
| Family | Ursidae |
| Named by | Gervais 1855 |
| Fossil records | 56 occurrences at 27 locations (PBDB) |
| Found in | United States, Mexico |
| Rock formations | txn:41301, Palm Spring, Silver Bluff, Socastee, Wicomico, Beaumont |
About Tremarctos
Tremarctos is a genus of the monophyletic bear subfamily Tremarctinae, endemic to Americas from the Pliocene to recent. The northern species, the Florida short-faced bear (T. floridanus), went extinct in the Late Pleistocene. The sole living Tremarctos species is the South American spectacled bear (T. ornatus). Tremarctos is also the only living genus under the Tremarctinae subfamily, with the other short-faced bears (Plionarctos, Arctodus, and Arctotherium) all being extinct.
Text in “About” is quoted from the Wikipedia article Tremarctos (revision 1370786048), 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: Q3768986.
