Corystidae
Encyclopedia
Corystidae is a family
of crab
s, in its own superfamily
, Corystoidea. It includes the oldest Eubrachyura
n fossil
, Hebertides jurassica, dating from the Bathonian
(Middle Jurassic
). Corystidae contains ten extant and five extinct species in eight genera:
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...
of 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, in its own superfamily
Taxonomic rank
In biological classification, rank is the level in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, and class. Each rank subsumes under it a number of less general categories...
, Corystoidea. It includes the oldest Eubrachyura
Eubrachyura
Eubrachyura is a group of crustaceans comprising the more advanced crabs. It is divided into two subsections, based on the position of the genital openings in the two sexes. In the Heterotremata, the openings are on the legs in the males, but on the sternum in females, while in the Thoracotremata,...
n fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...
, Hebertides jurassica, dating from the Bathonian
Bathonian
In the geologic timescale the Bathonian is an age or stage of the Middle Jurassic. It lasted from approximately 167.7 Ma to around 164.7 Ma...
(Middle Jurassic
Middle Jurassic
The Middle Jurassic is the second epoch of the Jurassic Period. It lasted from 176-161 million years ago. In European lithostratigraphy, rocks of this Middle Jurassic age are called the Dogger....
). Corystidae contains ten extant and five extinct species in eight genera:
- Corystes Bosc, 1802
- Corystites Lőrenthey, in Lőrenthey & Beurlen, 1929
- Gomeza Gray, 1831
- Gomezinus † Collins, Lee & Noad, 2003
- Harenacorystes † Van Bakel, Jagt, Artal & Fraaije, 2009
- Hebertides † Guinot, De Angeli & Garassino, 2007
- Jonas Hombron & Jacquinot, 1846
- Micromithrax † Noetling, 1881