†family Rotaformidae Pessagno 1970 (radiolarian)
Protozoa - Nassellaria - Rotaformidae
Parent taxon: Acanthodesmiacea according to P. De Wever et al. 2001
Sister taxa: Acanthodesmiidae, Artostrobiidae, Bulbocyrtiidae, Cannobotryidae, Carpocaniidae, Cuniculiformidae, Monicastericidae, Paratympanidae, Planispinocyrtiidae, Pterocorythidae, Sethophormididae, Spongolophophenidae, Spongosilicarmigeridae, Stephaniidae, Theopiliidae, Triospyrididae
Subtaxa: Rotaforma Saturniforma
Type: Rotaforma
Ecology: passively mobile planktonic omnivore
Distribution:
• Cretaceous of Italy (7 collections), Oman (1), United States (2: California)
Total: 10 collections including 15 occurrences