Hemiaulus Ehrenberg 1844
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Parent taxon: Biddulphiaceae according to M. -J. Chrétiennot-Dinet et al. 1993
See also Abbott and Ernissee 1983, Andrews 1976, Heiberg 1863 and Lakhanpal et al. 1976
Sister taxa: Biddulphia, Biddulphioideae, Briggera, Eunotogramma, Fenneria, Isthmia, Lisitzinia, Pseudotriceratium
Subtaxa: Hemiaulus polymorphus
Distribution:
• Miocene of United States (2: Maryland, North Carolina collections)
• Neogene of India (1)
• Eocene of the Russian Federation (1)
• Paleocene of Antarctica (13)
• Cretaceous of Antarctica (14), Canada (72: Northwest Territories, Nunavut)
Total: 103 collections including 475 occurrences
Specimen images are retrieved through the ePANDDA API.
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