''Ranina'' is a genus of

crab Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...

s belonging to the family

Raninidae Raninidae is a family of unusual crabs, sometimes known as "frog crabs", on account of their frog-like appearance. They are taken by most scientists to be quite primitive among the true crabs. They closely resemble the (unrelated) mole crabs, du ...

. ''

Ranina ranina ''Ranina ranina'', also known as the Huỳnh Đế crab, (red) frog crab or spanner crab, is a species of crab found throughout tropical and subtropical habitats. It is often fished for its meat, and is the only known species in its genus. Desc ...

'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Australia from the

Paleogene The Paleogene ( ; British English, also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period, geologic period and system that spans 43 million years from the end of the Cretaceous Period million yea ...

period to Recent (age range: 48.6 to 0.0 Ma). Fossilworks
/ref>

Species

Species within this genus include:Catalogue of life
/ref> *† '' Ranina americana'' Withers, 1924 *† '' Ranina berglundi'' Squires and Demetrion, 1992 *† '' Ranina bouilleana'' Milne-Edwards, 1872 *† '' Ranina brevispina'' Lorenthey, 1898 *† ''

Ranina burleighensis ''Ranina'' is a genus of crabs belonging to the family Raninidae. ''Ranina ranina'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Au ...

'' Holland and Cvancara, 1958 *† '' Ranina cuspidata'' Guppy, 1909 *† '' Ranina elegans'' Rathbun, 1945 *† '' Ranina granulosa'' Milne-Edwards, 1872 *† '' Ranina haszlinskyi'' Reuss, 1859 *† '' Ranina hirsuta'' Schafhautl, 1863 *† '' Ranina lamiensis'' Rathbun, 1945 *† '' Ranina molengraaffi'' Van Straelen, 1924 *† ''

Ranina oblonga ''Ranina'' is a genus of crabs belonging to the family Raninidae. ''Ranina ranina'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Au ...

'' Munster, 1840 *† ''

Ranina palmea ''Ranina'' is a genus of crabs belonging to the family Raninidae. ''Ranina ranina'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Au ...

'' Sismonda, 1846 *† ''

Ranina porifera ''Ranina'' is a genus of crabs belonging to the family Raninidae. ''Ranina ranina'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Au ...

'' Woodward, 1866 *† ''

Ranina propinqua ''Ranina'' is a genus of crabs belonging to the family Raninidae. ''Ranina ranina'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Au ...

'' Ristori, 1891 *† ''

Ranina quinquespinosa ''Ranina'' is a genus of crabs belonging to the family Raninidae. ''Ranina ranina'' is the only extant species. All the others are extinct. Fossils of these crabs have been found in the sediments of United States, Mexico, Italy, Turkey and Au ...

'' Rathbun, 1945 * ''

'' Linnaeus,

1758 Events January–March * January 1 – Swedish biologist Carl Linnaeus (Carl von Linné) publishes in Stockholm the first volume (''Animalia'') of the 10th edition of Systema Naturae, 10th edition of ''Systema Naturae'', the sta ...

(the only extant species) *† '' Ranina speciosa'' Munster, 1840 *† '' Ranina tejoniana'' Rathbun, 1926

References

{{Taxonbar, from=Q17979295 Crabs Paleogene genus first appearances Extant Paleogene first appearances Taxa named by Jean-Baptiste Lamarck