1971  Parahomoceras Ruzhentsev & Bogoslovskaia: 31.
     1978  Parahomoceras.-Ruzhentsev & Bogoslovskaia: 219.

Type species: Parahomoceras asperum Ruzhentsev & Bogoslovskaia, 1971, p.32 [OD].

A:   Early whorls evolute, but without "calyx" stage, umbilical shoulder narrowly rounded.
B-C: Later stages do not possess lamellar growth striae. Tubercles like in Umbetoceras, but small and slightly
prolongated.
E:   No furrows on internal mold.

[Ruzhentsev & Bogolovskaia, 1971, p. 31]: Shell of young specimens subspheroconic, adult shell pachyconic; calyx stage
indistinct. Whorls range from moderately involute to overhanging. Umbilicus ranges from average size to moderately narrow.
Sculpture represented by lamellae which are replaced with increasing  age by growth lines which form a small ventral sinus.
Tubercles developed along umbilical shoulder; these tubercles fairly large in young specimens and punctate in older
specimens. Intraventral ridge absent. Ventral lobe fairly broad (wl/hl = 1.10) with diverging sides and narrow branches.
Distinguished from some genera of the family by the development of fairly large umbilical tubercles and from others by the
lack of an intraventral ridge and the dying-out of the lamellae in the course of morhogenesis. Parahomoceras evidently
lacked a keel.

[Ruzhentsev et Bogoslovskaya, 1978, p.219: Conch of young specimens subsphaericone, becoming pachycone with age;  calyx stage indistinct.  Whorls moderately involute to protruding.  Umbilicus middle sized to moderately thin.  Sculpture represented by lamellae, which are replaced with age by growth lines, which form an unlarge ventral sinus.  Umbilical rim covered with protuberances, which are quite large in youth and dot - like in more adult specimens.  Keel absent.  Ventral lobe quite wide (w/h = 1.10), with diverging sides and thin prongs.]