What kind of family is XXX of?
Baeopleuroceras
Baeopleuroceras is a genus included in the Barrandeoceroid family Nephriticeratidae, found in Middle Devonian sediments in eastern North America (NY, Penn, Ont.) The shell of Baeopleuroceras is a short, rapidly expanding cyrtocone, curved through at least 90 degrees.
Nephriticeratidae