Parent taxon: Osteoglossomorpha according to R. van der Laan 2019
See also Betancur et al. 2013, Guo-Qing and Wilson 1994, Long 2011, Nelson 2006 and Nelson et al. 2016
Sister taxa: Chandlerichthys, Jiuquanichthyidae, Joffrichthys, Kipalaichthyidae, Kuyangichthyidae, Lycopteriformes, Osteoglossiformes, Shuleichthys
Subtaxa: Hiodontidae
Ecology: planktonic suspension feeder
Distribution:
• Quaternary of Canada (1: Quebec collection)
• Eocene to Oligocene of United States (1: Oregon)
• Eocene of Canada (3: British Columbia), United States (4: Montana, Washington, Wyoming)
• Paleocene of Bolivia (1)
• Cretaceous of Canada (10: Alberta, Saskatchewan), China (1), United States (10: Colorado, Montana, Utah, Wyoming)
Total: 31 collections including 33 occurrences