Panopeidae

Panopeidae
Dyspanopeus sayi
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Superfamily: Xanthoidea
Family: Panopeidae
Ortmann, 1893
Synonyms 

Eucratopsidae Stimpson, 1871 (nom. rej.)

The Panopeidae are a family containing 26 genera of morphologically similar crabs, often known as "mud crabs". Their centers of diversity are the Atlantic Ocean and eastern Pacific Ocean.