Sphenothallus
Note that Van Iten et al. (1996) regard Sphenothallus as a cnidarian, not a polychaete
Species
Sphenothallus sp.
Occurrence: Dillsboro
Reference: Bodenbender et al., 1989; Neal and Hannibal, 2000
Referred to as 'Dawsonia cycla' in Frey, 1989