Thoracophelia are burrowing deposit feeders, generally found in the mid- to upper intertidal areas of sandy intertidals. Thoracophelia are characterized by having the body divided into three distinct body regions: (1) a head, (2) a swollen thoracic region, and (3) a longer narrower posterior region containing a ventral groove and branchiae (Law et al., 2013).
- Law CL, Dorgan KM, & Rouse GW. 2013. Validation of three sympatric Thoracophelia species (Annelida: Opheliidae) from Dillon Beach, California using mitochondrial and nuclear DNA sequence data. Zootaxa 3608: 067-074.