Tags: Crustacean.
Goneplacoidea is a superfamily of crabs containing 11 extant families and two families known only from fossils (marked †). Acidopsidae † Carinocarcinoididae Chasmocarcinidae Conleyidae Euryplacidae Goneplacidae Litocheiridae † Martinocarcinidae Mathildellidae Progeryonidae Scalopidiidae Sotoplacidae Vultocinidae↑ ↑