Clade Cyclodorippoida Ahyong 2007 (crab)
Parent taxon: Brachyura according to H. Karasawa et al. 2011
Sister taxa: none
Subtaxa: Cyclodorippoidea
Ecology: epifaunal carnivore
Distribution:
• Pliocene of Japan (1 collection)
• Miocene of Japan (4), United States (3: Alaska, Oregon)
• Eocene of Italy (2), Mexico (1), United States (2: California, Washington)
• Paleogene of Hungary (1)
• Cretaceous of United States (1: Texas)
Total: 15 collections including 16 occurrences