Clade Cyclosquamata
Parent taxon: Eurypterygia according to R. van der Laan 2019
See also Bannikov 2014, Nelson 2006, Nelson et al. 2016 and Nolf and Dockery 1990
Sister taxa: Alepisauriformes, Aulopa, Cheirothricidae, Cheirotricidae, Ctenosquamata
Subtaxa: Aulopiformes