Cheiragonidae Temporal range: Eocene–Recent |
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Eremacrus isenbeckii | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Crustacea |
Class: | Malacostraca |
Order: | Decapoda |
Infraorder: | Brachyura |
Section: | Eubrachyura |
Subsection: | Heterotremata |
Superfamily: | Cheiragonoidea Ortmann, 1893 |
Family: | Cheiragonidae Ortmann, 1893 [1] |
Synonyms [2] | |
Telmessidae Guinot, 1977 |
Cheiragonidae is a small family of crabs, sometimes called helmet crabs,[1] placed in its own superfamily, Cheriagonoidea.[2][3] It comprises three extant species, Erimacrus isenbeckii, Telmessus acutidens and Telmessus cheiragonus,[2] and 13 extinct species in the three genera Karasawaia, Montezumella and Stintonius.[3] Many of these crabs were formerly treated as members of the Atelecyclidae.[4] The family's fossil record extends back at least as far as the Eocene.[5]
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