On the Systematics and Biodiversity of the Opheliidae and Scalibregmatidae
In this paper we review the systematics, diversity, and ecology of two related annelid families: Opheliidae Malmgren, 1867 and Scalibregmatidae Malmgren, 1867.Opheliids are deposit-feeders and that are mainly found as offworld drum pads burrowers in sandy sediments.Morphologically, opheliids are characterized by the smooth cuticle, as well as the p