Palicus is a genus of stilt crabs in the family Palicidae.
Dromiidae is a family of crabs, often referred to as sponge crabs. They are small or medium-sized crabs which get their name from the ability to shape a living sponge into a portable shelter for themselves. A sponge crab cuts out a fragment from a sponge and trims it to its own shape using its claws. The last two pairs of legs are shorter than other legs and bend upward over the crab's carapace, to hold the sponge in place. The sponge grows along with the crab, providing a consistent shelter.
Menippe is a genus of true crabs. One of the best known species is the Florida stone crab. Most of the species of this genus are found in the Atlantic Ocean.
Etyiidae is a prehistoric family of dromiacean crabs only known from Cretaceous and a few Paleocene fossils.
The Aethridae are a family of crabs in their own superfamily, Aethroidea. It contains these genera :
Goneplacoidea is a superfamily of crabs containing 11 extant families, and two families known only from fossils.
Palicoidea is a superfamily of crabs, comprising the two families Crossotonotidae and Palicidae. Together, they contain 13 genera, including two genera in the Palicidae known only from fossils. The two families were previously treated as two subfamilies in a Palicidae of wider circumscription.
Planes is a genus of crabs in the family Grapsidae that currently comprises three extant species: Planes minutus, Planes marinus Rathbun, 1914, and Planes major (=cyaneus). A further fossil species is known from the Middle Miocene of the Caucasus.
Liocarpilodes is a genus of crabs in the family Xanthidae, containing the following species:
Hypocolpus is a genus of crabs in the family Xanthidae, containing the following species:
Tweedieia is a genus of crabs in the family Xanthidae, containing the following species:
Edwardsium is a genus of crabs in the family Xanthidae, containing the following species:
Paraliomera is a genus of crabs in the family Xanthidae, containing the following species:
Cataleptodius is a genus of crabs in the family Xanthidae, containing the following species:
Neolioxantho is a genus of crabs in the family Xanthidae, containing the following species:
Paraxanthias is a genus of crabs in the family Xanthidae, containing one exclusively fossil species and the following extant species:
Xanthias is a genus of crabs in the family Xanthidae, containing two exclusively fossil species and the following extant species:
Xanthodius is a genus of crabs in the family Xanthidae, containing one exclusively fossil species and the following species:
Crangon is a genus of shrimp.
Ibericancer is a monotypic genus of fossil crabs. Its single species, Ibericancer sanchoi, was found in Spain.
