Tersomius fossil map
Where fossils of Tersomius have been found, shown on the Earth as it looked about 275 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 275 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 tetrapods & amphibians |
|---|---|
| Lived | 298.9–274.4 million years ago (Asselian to Kungurian) |
| Periods | Permian |
| Family | Micropholidae |
| Named by | Case 1910 |
| Fossil records | 6 occurrences at 5 locations (PBDB) |
| Found in | United States |
| Rock formations | txn:150343, Hennessey, Petrolia, Archer City |
About Tersomius
Tersomius is an extinct genus of dissorophoid temnospondyl within the family Micropholidae. It is known from the early Permian of North America (Oklahoma and Texas).
Text in “About” is quoted from the Wikipedia article Tersomius (revision 1368731277), 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: Q7705223.
