Eocarcinoidea is a superfamily of

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 preserve ...

decapod crustaceans. Formerly thought to be the earliest true

crab Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropo ...

s, they are now thought to be the oldest members of the

Anomura Anomura (sometimes Anomala) is a group of decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word ''crab'', all true crabs are in the sister group to the Anomura, the Brachyura (the two groups ...

. Two species are included, each in its own family-taxon: '' Eocarcinus praecursor'' (Eocarcinidae) and '' Platykotta akaina'' (Platykottidae).

References

Anomura Norian first appearances Early Jurassic first appearances {{paleo-crustacean-stub