Unlike other chondrichthyans that have three basal plates on pectoral fin (propterygium, mesopterygium and metapterygium), its pectoral fin had only two basal plates and lacked mesopterygium. Even through it is one of the earliest known stem-elasmobranchs, it is estimated to be a specialized suction feedeeing benthic predator, either ambushing or using stealth to approach its prey.
Unlike other chondrichthyans with three basal plates on pectoral fin (propterygium, mesopterygium and metapterygium), this creature had only two basal plates and lacked mesopterygium. This animal is considered a specialized suction feeding benthic predator that either ambushed or used stealth to approach its prey.