Othnielmarshia fossil map
Where fossils of Othnielmarshia 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 | 57–37.71 million years ago (Thanetian to Bartonian) |
| Periods | Paleogene |
| Family | Henricosborniidae |
| Named by | Ameghino 1901 |
| Fossil records | 18 occurrences at 5 locations (PBDB) |
| Found in | Argentina |
| Rock formations | txn:43329, Sarmiento, Las Flores |
About Othnielmarshia
Othnielmarshia is an extinct genus of placental mammal from the Paleocene and the Eocene of South America, belonging to the family Henricosborniidae within the order Notoungulata. It was named after the famous paleontologist Othniel Charles Marsh.
Text in “About” is quoted from the Wikipedia article Othnielmarshia (revision 1348818933), 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: Q98843205.
