Eryonidae

Eryonidae is a family of fossil decapod crustaceans which lived from the Upper Triassic to the Lower Cretaceous.[1] It contains four genera:[2] 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.[3]

• Cycleryon Glaessner, 1965
• Eryon A. G. Desmarest, 1817
• Knebelia Van Straelen, 1922
• Rosenfeldia Garassino, Teruzzi & Dalla Vecchia, 1996

Eryonidae Temporal range: Upper Triassic–Lower Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N
Eryon acrtiformis
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Malacostraca
Order:	Decapoda
Infraorder:	Polychelida
Family:	Eryonidae De Haan, 1841
Genera
Cycleryon Eryon Knebelia Rosenfeldia

References

1. Hiroaki Karasawa; Fumio Takahashi; Eiji Doi; Hideo Ishida (2003). "First record of Coleia Broderip (Crustacea, Decapoda, Coleiidae) from the Upper Triassic of Japan". Contributions to Zoology. 72 (2/3).
2. Sammy De Grave; N. Dean Pentcheff; Shane T. Ahyong; et al. (2009). "A classification of living and fossil genera of decapod crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1–109. Archived from the original (PDF) on 2011-06-06.
3. Adiël A. Klompmaker; René H. B. Fraaije (2012). "Animal behavior frozen in time: gregarious behavior of Early Jurassic lobsters within an ammonoid body chamber". PLoS ONE. 7 (3): e31893. doi:10.1371/journal.pone.0031893. PMC 3296704. PMID 22412846.

External links

• Media related to Eryonidae at Wikimedia Commons