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:
• Pliocene of Chile (1 collection), Japan (2)
• Miocene of Chile (1), Mexico (1), United States (5: Maryland, North Carolina, Virginia)
• Neogene of India (1)
• Oligocene of India (1)
• Eocene of the Russian Federation (1)
• Paleocene of Antarctica (8)
• Cretaceous of Antarctica (5), Canada (41: Northwest Territories, Nunavut)
Total: 67 collections including 111 occurrences