Thoatheriopsis fossil map
Where fossils of Thoatheriopsis have been found, shown on the Earth as it looked about 15 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 15 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 | 17.5–16.3 million years ago (Burdigalian) |
| Periods | Neogene |
| Named by | Soria 2001 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Mariño |
About Thoatheriopsis
Thoatheriopsis is an extinct genus of proterotheriid from the Miocene of Mendoza Province, Argentina. The taxon is known only from the specimen MLP 81-XI-28-1, which includes an upper tooth row, and was named as the new binomial Thoatheriopsis mendocensis by Miguel Soria posthumously in 2001. The only provenance information known about the specimen is that it comes from the Anfiteatro de Cacheuta, and it is probably from the Mariño Formation, of which it could be from either the Areniscas Entrecruzadas or the Estratos de Mariño Member, which are both present at the known location of discovery. This means that the age for Thoatheriopsis cannot be determined beyond either being from the Santacrucian or Laventan South American Land Mammal Ages in the Early or Middle Miocene. Thoatheriopsis was found to be a close relative of Diadiaphorus and Neobrachytherium.
Text in “About” is quoted from the Wikipedia article Thoatheriopsis (revision 1183861948), 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: Q111838967.
