Priacodon

{{Short description|Extinct family of mammals}}

{{Automatic taxobox

| taxon = Priacodon

| authority = Marsh, 1887

| fossil_range = {{Fossil range|Late Jurassic}}

| image = Priacodon fruitaensis LACM.jpg

| image_caption = Lower jaw (LACM 135530) of P. fruitaensis, Natural History Museum of Los Angeles County

| type_species = {{extinct}}Priacodon ferox

| type_species_authority = Marsh, 1880

}}

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.Foster, J. (2007). "Appendix." Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. pp. 327–329. The genus contains four known species: Priacodon ferox, Priacodon fruitaensis, Priacodon lulli and Priacodon robustus.

Jaw and teeth

A study on the jaw and teeth of Priacodon suggests that eutriconodonts, while specialised towards carnivory, had a more passive jaw roll than modern therian carnivores. It also demonstrates that embrasure occlusion was present in all eutriconodonts, as opposed to one-to-one patterns as previously assumed for the family Triconodontidae.{{cite journal |last1=Jäger |first1=Kai R. K. |last2=Cifelli |first2=Richard L. |last3=Martin |first3=Thomas |title=Molar occlusion and jaw roll in early crown mammals |journal=Scientific Reports |date=2020 |volume=10 |issue=1 |pages=22378 |doi=10.1038/s41598-020-79159-4 |pmid=33361774 |pmc=7759581 |bibcode=2020NatSR..1022378J |language=en |issn=2045-2322|doi-access=free }}

See also

References

{{Reflist}}

= Bibliography =

  • Foster, J. (2007). Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. 389pp.

{{Mammaliaformes|T.}}

{{Taxonbar|from=Q7242506}}

Category:Triconodontidae

Category:Tithonian genera

Category:Late Jurassic mammals of Europe

Category:Jurassic Portugal

Category:Fossils of Portugal

Category:Morrison mammals

Category:Fossil taxa described in 1887

Category:Taxa named by Othniel Charles Marsh

Category:Prehistoric mammal genera

{{jurassic-mammal-stub}}