Order Petromyzontiformes Berg 1940 (lamprey)
Petromyzontida - Petromyzontiformes
Alternative spelling: Petromyzoniformes
Synonym: Hyperoartii
Parent taxon: Petromyzontida according to J. A. Long 2011
See also Gess et al. 2006 and Sepkoski 2002
Sister taxon: Hardistiella
Subtaxa: Euphanerops Mayomyzon Mesomyzon Petromyzontidae Priscomyzon
Ecology:
Distribution:
• Cretaceous of China (1 collection)
• Carboniferous of United States (1: Illinois)
• Devonian of Canada (1: Quebec), South Africa (1)
Total: 4 collections each including a single occurrence