Dakoticancroidea
Encyclopedia
Dakoticancroidea is a superfamily of fossil
crab
s, containing six species
in five genera
, divided into two families
. The family Dakoticancridae is only known from North America
n rocks of Late Cretaceous
age, while the single species in the Ibericancridae was found in Spain
.
Dakoticancridae Rathbun, 1917
Ibericancridae Artal, Guinot, Van Bakel & Castillo, 2008
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...
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, containing six species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
in five genera
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...
, divided into two families
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
. The family Dakoticancridae is only known from North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
n rocks of Late Cretaceous
Late Cretaceous
The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...
age, while the single species in the Ibericancridae was found in Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...
.
Dakoticancridae Rathbun, 1917
- Avitelmessus grapsoideus Rathbun, 1923
- Dakoticancer australis Rathbun, 1926
- Dakoticancer overana Rathbun, 1917
- Seorsus wadei Bishop, 1988
- Tetracarcinus subquadrata Weller, 1905
Ibericancridae Artal, Guinot, Van Bakel & Castillo, 2008
- Ibericancer sanchoi Artal, Guinot, Van Bakel & Castillo, 2008