Polymorphis fossil map
Where fossils of Polymorphis 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 | 48–42 million years ago (Lutetian) |
| Periods | Paleogene |
| Family | Macraucheniidae |
| Named by | Roth 1899 |
| Fossil records | 8 occurrences at 3 locations (PBDB) |
| Found in | Argentina |
| Rock formations | txn:43493 |
About Polymorphis
Polymorphis is an extinct genus of litopterns belonging to the family Macraucheniidae. It lived during the Middle Eocene of Argentina.
Text in “About” is quoted from the Wikipedia article Polymorphis (revision 1324333425), 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: Q63522306.
