Euthlastus fossil map
Where fossils of Euthlastus have been found, shown on the Earth as it looked about 145 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 145 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 | 154.8–143.1 million years ago (Kimmeridgian to Tithonian) |
| Periods | Jurassic |
| Family | Dryolestidae |
| Named by | Simpson 1927 |
| Fossil records | 6 occurrences at 3 locations (PBDB) |
| Found in | United States |
| Rock formations | Morrison |
About Euthlastus
Euthlastus is an extinct genus of Late Jurassic (Kimmeridgian - Tithonian) mammal from the Morrison Formation.
Present in stratigraphic zones 5 and 6. It is represented by only five upper molars.
Text in “About” is quoted from the Wikipedia article Euthlastus (revision 1045617188), 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: Q5414470.
