Protozoa - Nassellaria - Acanthodesmiidae
Parent taxon: Acanthodesmiacea according to P. De Wever et al. 2001
See also Sharma and Takahashi 2007
Sister taxa: Artostrobiidae, Bulbocyrtiidae, Cannobotryidae, Carpocaniidae, Cuniculiformidae, Monicastericidae, Paratympanidae, Planispinocyrtiidae, Pterocorythidae, Rotaformidae, Sethophormididae, Spongolophophenidae, Spongosilicarmigeridae, Stephaniidae, Theopiliidae, Triospyrididae
Subtaxa: Archicircus Circospyris Dictyospris Dipocoronis Eucoronis Lithocircus Lithotympanum Microcubus Nephrodictyum Paradictyum Perispyris Semantis Triceraspyris Tricolospyris Tricyclidium Trissocyclus Tympanidium Tympaniscus Tympanomma Zygocircus Zygostephanus
Ecology: passively mobile planktonic omnivore
Distribution:
• Quaternary of Japan (7 collections)
Total: 7 collections including 11 occurrences