Calappidae

Calappidae
Calappa japonica seen from above; the front of the animal is at the top of the picture
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Brachyura
Superfamily: Calappoidea
Family: Calappidae
Milne-Edwards, 1837

Calappidae is a family of crabs containing 16 genera, of which 7 are only known as fossils:[1]

References