Calappoidea is a
superfamily of
crabs comprising the two families
Calappidae and
Matutidae
Matutidae is a family of crabs, sometimes called ''moon crabs'', adapted for swimming or digging. They differ from the swimming crabs of the family Portunidae in that all five pairs of legs are flattened, rather than just the last pair, as in P ...
.
The earliest
fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
s attributable to the Calappoidea date from the
Aptian.
References
External links
*
Crabs
Aptian first appearances
Taxa named by Henri Milne-Edwards
Arthropod superfamilies
Extant Aptian first appearances
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