Priacodon fossil map
Where fossils of Priacodon 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 | Triconodontidae |
| Named by | Marsh 1887 |
| Fossil records | 14 occurrences at 4 locations (PBDB) |
| Found in | United States, Portugal |
| Rock formations | Morrison, Lourinhã |
About Priacodon
Priacodon is an extinct genus of Late Jurassic eutriconodont mammal from the Alcobaça Formation of Portugal and the Morrison Formation of the midwestern United States.
It is present in stratigraphic zones 4–6 of the latter. The genus contains four known species: Priacodon ferox, Priacodon fruitaensis, Priacodon lulli and Priacodon robustus.
Text in “About” is quoted from the Wikipedia article Priacodon (revision 1208690754), 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: Q7242506.
