congeneric

Isotypical: a genus described from more than one species, all of which are congeneric.

The whole much resembles, and is probably congeneric with the erismatholithus tubiporites (catenatus) of Martin's Petrif.

We have evidence that these ancient animals possessed the same senses as their congeneric races now on the globe.

Congeneric: applied to a species agreeing in all characters of generic value with others compared with it.

From its congeneric brethren this species differs in the absence of a clear ash upon the throat.