Bacillariophyceae - Coscinodiscales - Heliopeltaceae
Full reference: H. L. Smith. 1872. Conspectus of the families and genera of the Diatomaceae. The Lens 1:1-19
Parent taxon: Coscinodiscales according to F. E. Round et al. 1990
See also Fourtanier and Kociolek 1999 and Smith 1872
Sister taxa: Coscinodiscaceae, Rocella, Rocellaceae
Subtaxa: Actinoptychus Auliscus
Ecology: "photoautotroph"
Distribution:
• NN21 of Indian Ocean (6 collections), North Pacific (11), South Atlantic (1)
• Neodenticula seminae of North Pacific (2)
• Quaternary of Indian Ocean (18), North Pacific (151), South Pacific (1), Southern Ocean (27)
• C2 of North Pacific (7)
• NN16 of Indian Ocean (29)
• Pliocene to Pleistocene of North Pacific (1)
• Pliocene of Chile (1), Indian Ocean (14), Japan (2), North Pacific (39), South Pacific (1), Southern Ocean (9)
• NN12 of Indian Ocean (6)
• Neodenticula kamtschatica of North Pacific (5)
• Miocene to Pliocene of North Pacific (1)
• Miocene of Chile (1), Indian Ocean (34), Mexico (2), North Pacific (56), Southern Ocean (23), United States (5: Maryland, North Carolina, Virginia)
• Neogene of India (1)
• Oligocene of India (1), Southern Ocean (5)
• Eocene of the Russian Federation (1)
• Paleocene of Antarctica (8)
• Cretaceous of Antarctica (5), Canada (41: Northwest Territories, Nunavut)
Total: 515 collections including 558 occurrences