†family Mayomyzontidae Bardack and Zangerl 1971 (lamprey)
Cyclostomi - Petromyzontiformes - Mayomyzontidae
Parent taxon: Petromyzontiformes according to R. van der Laan 2019
See also Nelson et al. 2016
Sister taxa: Caeruleum, Geotriidae, Hardistiellidae, Mayomyzon, Mesomyzon, Mordaciidae, Petromyzontidae, Priscomyzon
Subtaxa: none
Ecology: planktonic suspension feeder
Distribution: there are no occurrences of Mayomyzontidae in the database