†Amphigeisina (arrow worm)
Parent taxon: Protoconodontida according to J. J. Sepkoski 2002
Sister taxa: Ganloudina, Gapparodus, Glauderia, Kijacus
Subtaxa: Amphigeisina renae
Ecology: nektonic carnivore
Parent taxon: Protoconodontida according to J. J. Sepkoski 2002
Sister taxa: Ganloudina, Gapparodus, Glauderia, Kijacus
Subtaxa: Amphigeisina renae
Ecology: nektonic carnivore