Family Mordaciidae Gill 1893 (lamprey)
Agnatha - Petromyzontiformes - Mordaciidae
Parent taxon: Petromyzontiformes according to R. Van Der Laan 2019
See also Nelson et al. 2016
Sister taxa: Euphanerops, Geotriidae, Hardistiellidae, Mayomyzon, Mayomyzontidae, Mesomyzon, Petromyzontidae, Priscomyzon
Subtaxa: Mordacia
Ecology:
Distribution: there are no occurrences of Mordaciidae in the database