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Cheiragonidae Temporal range: Eocene–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Erimacrus isenbeckii
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Brachyura
Superfamily:	Cancroidea
Family:	Cheiragonidae Ortmann, 1893
Synonyms
Telmessidae Guinot, 1977

Cheiragonidae is a small family of crabs, sometimes called helmet crabs, placed in its own superfamily, Cheriagonoidea. It comprises three extant species, Erimacrus isenbeckii, Telmessus acutidens and Telmessus cheiragonus, there are no yet evidences of Cheiragonidae in the fossil record. Many of these crabs were formerly treated as members of the Atelecyclidae.

References

1. ^ "Cheiragonidae". Integrated Taxonomic Information System.
2. ^ Peter K. L. Ng; Danièle Guinot; Peter J. F. Davie (2008). "Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world" (PDF). Raffles Bulletin of Zoology. 17: 1–286. Archived from the original (PDF) on 2011-06-06.
3. ^ 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.
4. Ossó, À.; Domínguez, J.L. (2013). "A proposal for a new family: Montezumellidae (Crustacea,Decapoda, Brachyura) and description of new genus and species Moianella cervantesi from the Priabonian (late Eocene) of Catalonia (NE of Iberian Peninsula)". Boletín de la Sociedad Geológica Mexicana. 65 (2): 285–298. doi:10.18268/BSGM2013v65n2a10. http://boletinsgm.igeolcu.unam.mx/bsgm/vols/epoca04/6502/%2810%29Osso.pdf
5. Joel W. Martin; George E. Davis (2001). An Updated Classification of the Recent Crustacea (PDF). Natural History Museum of Los Angeles County. p. 132. Archived from the original (PDF) on 2013-05-12. Retrieved 2010-01-01.
6. Carrie E. Schweitzer; Eric W. Salva (2000). "First recognition of the Cheiragonidae (Decapoda) in the fossil record and comparison of the family with the Atelecyclidae". Journal of Crustacean Biology. 20 (2): 285–298. doi:10.1651/0278-0372(2000)020[0285:FROTCD]2.0.CO;2.

v t e Superfamilies of Infraorder Brachyura (true crabs)
Kingdom Animalia Phylum Arthropoda Class Malacostraca Order Decapoda Suborder Pleocyemata
Dromiacea	Dakoticancroidea† Dromioidea Glaessneropsoidea† Homolodromioidea Homoloidea
Raninoida	Raninoidea
Cyclodorippoida	Cyclodorippoidea
Eubrachyura	Heterotremata Aethroidea Bellioidea Bythograeoidea Calappoidea Cancroidea Carpilioidea Cheiragonoidea Componocancroidea† Corystoidea Dairoidea Dorippoidea Eriphioidea Gecarcinucoidea Goneplacoidea Hexapodoidea Leucosioidea Majoidea Orithyioidea Palicoidea Parthenopoidea Pilumnoidea Portunoidea Potamoidea Pseudothelphusoidea Pseudozioidea Retroplumoidea Trapezioidea Trichodactyloidea Xanthoidea Thoracotremata Cryptochiroidea Grapsoidea Ocypodoidea Pinnotheroidea

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