Protozoa - Nassellaria - Theopiliidae
Parent taxon: Acanthodesmiacea according to P. De Wever et al. 2001
See also Loeblich and Tappan 1961
Sister taxa: Acanthodesmiidae, Artostrobiidae, Bulbocyrtiidae, Cannobotryidae, Carpocaniidae, Cuniculiformidae, Monicastericidae, Paratympanidae, Planispinocyrtiidae, Pterocorythidae, Rotaformidae, Sethophormididae, Spongolophophenidae, Spongosilicarmigeridae, Stephaniidae, Triospyrididae
Subtaxa: Cecryphalium Clathrocyclas Cycladophora Eucecryphalus Eurystomoskevos Lipmanella Phrenocodon Theocalyptra Theopilium
Type: Theopilium
Ecology: passively mobile planktonic omnivore
Distribution:
• Quaternary of Japan (8 collections)
• Paleocene of New Zealand (13)
• Cretaceous of Japan (2)
• Triassic of Hungary (2)
Total: 25 collections including 41 occurrences