Infraorder Polychelida Higher classification Eryonoidea Order Decapoda | Subphylum Crustacea Rank Family | |
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Similar Decapoda, Polychelida, Polychelidae, Cycleryon, Eryma | ||
Eryonidae is a family of fossil decapod crustaceans which lived from the Upper Triassic to the Lower Cretaceous. It contains four genera: An aggregation of three unidentified eryonids was reported in 2012 inside a Late Jurassic ammonoid of the species Harpoceras falciferum; they represent the earliest evidence of gregarious behaviour in decapods.
References
Eryonidae Wikipedia(Text) CC BY-SA