Domain- Eukarya                                                          The Dungeness Crab Image from  

Kingdom – Animalia

Phylum- Arthropoda

Subphylum- Crustacea

Class- Malacostraca

Order- Decapoda

Family- Cancridae

Genus- Cancer

Species- Cancer magister

 The Dungeness crab has a dark purplish colored body with white tipped claws.  It is mostly know as the edible crab of the west coast.  Its common name is thought to have originated from be first caught in Dungeness, Washington.  Cancer magister means "master crab" translated from Latin. Below is an explanation of each level presented above.


The Dungeness crab is eukaryote because it has cells that contain a true nucleus and membrane bound organelles.


The Dungeness crab is a multicellular organism that is motile, heterotrophic, and lacks a cell wall.


The Dungeness crab is a triploblastic coelomate that has a chitinous exoskeleton which grows by molting.  It also has a segmented body and jointed appendages.


The malacostraca is a very large and diverse group containing organisms with six segmented head, pair of antennae, and mouthparts. The gills occur on or close to the bases of the thoracic appendages.


The Dungeness crab body is segmented into two regions: cepalothorax and abdomen.  It also possesses two pairs of antennae and mandibles.


The Dungeness crab has 5 pairs of appendages and the front two are modified into pinchers. 


The Dungeness crab is an oval crab which has teeth in the front part of the carapace.   The word also refers too many of the best known edible crabs.


The Dungeness crab is a marine crab which inhabits the littoral zone.

Phylogenetic Tree

Phylogenetic Tree of the Dungeness crab 
Click on the picture to view the tree I created and make sure to magnify to view text easier.

Phylogenetic tree of decapods from the Tree of Life web project


Also, there are great phylogenetic trees at the Tree of Life web page like this one focusing on decapods.

The Cancer magister would then be in the Caridea Family which is on the bottom of this tree.  Finally, followed by the Genus Cancer and specifically the species Cancer magister.



Next, looking at the Habitat of the Dungeness crab.