Ecolsonia fossil map
Where fossils of Ecolsonia have been found, shown on the Earth as it looked about 300 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 300 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 | 298.9–286 million years ago (Asselian to Artinskian) |
| Periods | Permian |
| Family | Trematopidae |
| Named by | Vaughn 1969 |
| Fossil records | 3 occurrences at 3 locations (PBDB) |
| Found in | United States |
| Rock formations | El Cobre Canyon, Cutler |
About Ecolsonia
Ecolsonia is an extinct genus of trematopid temnospondyl. Its phylogenetic position within Olsoniformes has been historically debated, but it is presently considered to be a trematopid.
Text in “About” is quoted from the Wikipedia article Ecolsonia (revision 1313802609), 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: Q5333307.