Raninidae

Taxobox
name = Raninidae

---

image_width = 250px
image_caption = "Lyreidus tridentatus"
regnum = Animalia
phylum = Arthropoda
classis = Malacostraca
ordo = Decapoda
subordo = Pleocyemata
infraordo = Brachyura
zoosectio = Eubrachyura
zoosubsectio = Raninoida
superfamilia = Raninoidea
familia = Raninidae
familia_authority = De Haan, 1839
subdivision_ranks = Genera and species
subdivision = See text.

Raninidae is a family of unusual crabs named for their frog-like appearance, taken by most scientists to be quite primitive. These animals closely resemble the (unrelated) mole crabs, due to parallel evolution or evolutionary relay. In both groups, the claws are modified into tools for digging, and the body is a rounded shape that is easy to bury in sand. Unlike most other true crabs, the abdomens of raninids are not curled under the cephalothorax.

Genera and species

* Genus "Lyreidus"
** "Lyreidus bairdi"
** Longleg frog crab, "Lyreidus nitidus"
** "Lyreidus tridentatus"
* Genus "Lysirude"
* Genus "Notopoides"
* Genus "Notosceles"
* Genus "Ranilia"
** Sicklefoot frog crab, "Ranilia constricta"
** Muricate frog crab, "Ranilia muricata"
* Genus "Ranina"
** Spanner crab, "Ranina ranina"
* Genus "Raninoides"
** "Raninoides lamarcki"
** Furrowed frog crab, "Raninoides loevis"
** Gulf frog crab, "Raninoides louisianensis"
* Genus "Symethis"
** Eroded frog crab, "Symethis variolosa"

External links

* [http://animaldiversity.ummz.umich.edu/site/accounts/classification/Raninidae.html#Raninidae University of Michigan]