Evolution & Systematics

The taxonomic hierarchy is shown below with references to who and when the classification was found.
 

Kingdom: Animalia

Subkingdom: Bilateria

Infrakingdom: Protostomia

Superphylum: Ecdysozoa

Phylum: Arthropoda

Subphylum: Crustacea (Brünnich,1772)

Class: Malacostraca (Latreille, 1802)

Subclass: Eumalacostraca (Grobben, 1892)

Superorder: Eucarida (Calman, 1904)

Order: Decapoda (Latreille, 1802)

Suborder: Pleocyemata (Burkenroad, 1963)

Infraorder: Brachyura (Latreille, 1802)

Superfamily: Xanthoidea (MacLeay, 1838)

Family: Xanthidae (MacLeay, 1838)

Genus: Atergatis (DeHaan, 1833)

Species: Atergatis floridus (Linnaeus, 1767)

(Itis.gov, 2014)