title: Treatise Online no. 70: Part L, Revised, Volume 3B, Chapter 3: Lytoceratoidea
abstract: middle whorls that are markedly rursiradiate on the whorl sides, and curve strongly forwards over the ventrolateral shoulders to form a long ventral sinus; adult body chamber may have an obliquely angled venter and large ventrolateral parabolic spines; occasional constrictions on the inner whorls; suture line lytoceratid, but with phylloid saddle endings; possibly dimorphic from the presence of small-sized adult microconchs
journal: Treatise Online