Romaleon
Encyclopedia
Romaleon is a genus
of marine
crab
s formerly considered in the genus Cancer
.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...
crab
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...
s formerly considered in the genus Cancer
Cancer (genus)
Cancer is a genus of marine crabs in the family Cancridae. It includes 8 extant species and 3 extinct species, including familiar crabs of the littoral zone, such as the European edible crab , the Jonah crab and the red rock crab...
.
Species
The genus, as currently circumscribed, contains seven species:- Romaleon antennarium Stimpson, 1856
- Romaleon branneri Rathbun, 1926
- Romaleon gibbosulum De Haan, 1833
- Romaleon jordani Rathbun, 1900
- Romaleon luzonense Sakai 1983
- Romaleon nadaense Sakai, 1969
- Romaleon polyodon Poeppig, 1836