Gatunek typowy
Devonalosia wrightorum Muir-Wood et Cooper, 1960; Ontario, Canada; Mid Devonian, Givetian

Opis

Shell small with outline subcircular and flat pseudodeltidium, no chilidium, cicatrix varied; only ventral spines, thick, attaching posteriorly, recumbent anteriorly, arranged concentrically; rugae weak, somewhat lamellose; strong teeth, impressed ventral diductor scars; deep sockets, dorsal median septum and tuberculate between brachial impressions.

Synonimy

Zasięg czasowy

Mid Devonian (Eifelian–Givetian); North America (Canada), Europe (Poland) and Africa (Morocco)

Literatura