 Hence they suggest that "Lingulosacculus" may have been a member of a phoronid stem group within the linguliform brachiopods.Another alternative is that "Eccentrotheca" lies somewhere in the phoronid stem lineage.There is good evidence that species of "Phoronis" created the trace fossils of the ichnogenus "Talpina", which have been found in the Devonian, Jurassic and Cretaceous periods.