Anteriornectophore as broad as it is wide, with most ridges heavily, but irregularly, serrated. Ventral facet not separated, by a transverseridge, from apico-ventral one. Posteriornectophore with from 4 to 11 teeth on comb. Two rows of teeth on basal margin of right ventralwing. Ostial teeth heavily serrated.
Kingdom Animalia Phylum Cnidaria Class Hydrozoa Subclass Siphonophorae Order Calycophorae Family Abylidae Subfamily Abylinae Genus Abyla Species Abyla trigona