Echioceratidae
Translingual edit
Etymology edit
Echioceras + -idae
Proper noun edit
†Echioceratidae
- A taxonomic family within the order Ammonitida – ammonites with serpenticone shells with keel, that lived in the Sinemurian stage of the Jurassic.
References edit
Echioceratidae on Wikipedia.Wikipedia 
Psiloceratoidea on Wikispecies.Wikispecies 
Category:Psiloceratoidea on Wikimedia Commons.Wikimedia Commons - Echioceratidae at Paleobiology Database
