Echioceratidae

Translingual

Echioceras raricostatum

Etymology

Echioceras +‎ -idae

Proper noun

†Echioceratidae

1. A taxonomic family within the order Ammonitida – ammonites with serpenticone shells with keel, that lived in the Sinemurian stage of the Jurassic.

References

• Echioceratidae on Wikipedia.Wikipedia
• Psiloceratoidea on Wikispecies.Wikispecies
• Category:Psiloceratoidea on Wikimedia Commons.Wikimedia Commons
• Echioceratidae at Paleobiology Database