Nanotragulus fossil map
Where fossils of Nanotragulus have been found, shown on the Earth as it looked about 30 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 30 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 | 41.03–16.3 million years ago (Bartonian to Burdigalian) |
| Periods | Paleogene, Neogene |
| Family | Hypertragulidae |
| Named by | Lull 1922 |
| Fossil records | 110 occurrences at 25 locations (PBDB) |
| Found in | United States, Mexico |
| Rock formations | Sharps, txn:42589, Harrison, Delaho, Gering, Sespe |
About Nanotragulus
Nanotragulus is an extinct genus of hypertragulid ruminant found in North America. It lived from the Middle Eocene to the Early Miocene, living 46.2–20.4 Ma, existing for approximately 26 million years. Fossils have been found from Oregon and Montana to Florida.
Nanotragulus was a primitive and ancient ruminant, resembling small deer or musk deer, although more closely related to the modern chevrotain. Its diet is stated to be that of a frugivore.
Text in “About” is quoted from the Wikipedia article Nanotragulus (revision 1376843348), 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: Q6964166.