Trapezioidea is a superfamily of crabs. Its members live symbiotically with corals and have a fossil record stretching back to the Eocene.

Families

The World Register of Marine Species lists the following families:

  • Calocarcinidae Števčić, 2005
  • Domeciidae Ortmann, 1893
  • Ectaesthesiidae Ng, Ahyong & Castro, 2023
  • Tetraliidae Castro, Ng & Ahyong, 2004
  • Trapeziidae Miers, 1886
  • †Vicetitrapeziidae Beschin, Busulini & Tessier, 2021