Nomenclatural problems of Breviphrentis stumm, 1949 and Contophrentis new genus (Devonian rugose corals)

The siphonophrentidae is a family of Devonian rugose corals that are known mostly from eastern North America, a part of the Eastern Americas biogeographical Realm (EAR) during the Devonian. Breviphrentis Stumm, 1949, has been considered a siphonophrentid by most previous authors and, in a recent monograph (Oliver, 1993), I described three EAR species as Breviphrentis and referred others to the genus.