Narrative

Crabs Calappa (Family Calappidae) is a group of marine Decapods that are typically bottom feeders that scavenge for both dead and living food. This is an ancient family being known from the Cretaceous period to the present age. They can be recognized by the large pinchers that they hold in front of their face, the abdomen hidden under the thorax, and small antennae. The following genera are in this family:

Calappa
Cancer (sometimes placed in its own family)
Hepatus

Taxonomy

References