Tetrachela

Tetrachela Temporal range: Late Triassic PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Superfamily:	Eryonoidea
Family:	†Tetrachelidae Beurlen, 1930
Genus:	†Tetrachela Reuss, 1858
Species:	†T. raiblana
Binomial name
†Tetrachela raiblana (Bronn, 1858)

Tetrachela raiblana is an extinct species of polychelid crustacean from the Late Triassic. It is the only species in the family Tetrachelidae.[1] It is distinguished from most other polychelids, including all the extant Polychelidae, by the retention of the diaeresis (divisions) of the uropodal exopods.[2]

References

1. 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.
2. Shane T. Ahyong (2009). "The polychelidan lobsters: phylogeny and systematics (Polychelida: Polychelidae)". In Joel W. Martin; Keith A. Crandall; Darryl F. Felder (eds.). Decapod Crustacean Phylogenetics (PDF). Crustacean Issues 18. CRC Press. pp. 369–396. ISBN 978-1-4200-9258-5.