Parvicornus fossil map
Where fossils of Parvicornus have been found, shown on the Earth as it looked about 45 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 45 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 | 39.7–37 million years ago (Bartonian to Priabonian) |
| Periods | Paleogene |
| Family | Brontotheriidae |
| Named by | Mihlbachler and Deméré 2009 |
| Fossil records | 6 occurrences at 1 locations (PBDB) |
| Found in | United States |
| Rock formations | Santiago |
About Parvicornus
Parvicornus (lit. 'little horn') is an extinct genus of horned brontothere that lived in western North America during the Middle to Late Eocene, in the Duchesnean land mammal age. A single species is known, P. occidentalis, from the Santiago Formation in southern California. Fossils possibly belonging to Parvicornus have also been found in North Dakota and Texas. Parvicornus was smaller than most of the other horned brontotheres of Eocene North America but still a large animal, about the same size as the modern-day black rhinoceros.
Text in “About” is quoted from the Wikipedia article Parvicornus (revision 1364409933), 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: Q2055169.
