1965  Christioceras Nassichuk 6 Furnish: 725.
     1970  Parawinslowoceras Popov in Abramov: 375 (nom.nud.).
     1970  Parawinslowoceras Popov in Abramov: 97.
     1975  Christioceras.-Nassichuk: 155.

Type species: Christioceras trifurcatum Nassichuk & Furnish, 1965, p. 726.

[= Parawinslowoceras Popov in Abramov, 1970, p.375, type Winslowoceras domokhtovi POPOV, 1970, p.136; M (nom. nud.)].

Ventral groove and umbilical or ventrolateral nodes at maturity. Sutural formula: [Germ.] (E1EmE1)(AvAmAd)(LvLmLd)(U1vU1d:U1d)I,  [Russ.] (V1V1)(L2L1L2)(U2U1U2)(I2I1:I2)D.

[Parawinslowoceras has been established without diagnosis].

[Nassichuk, 1975, p.155: The conch of Christoceras is lenticular, moderately evolute
at maturity, lateral flanks are flat, and the venter is concave. Shell ornament includes
broad and subdued longitudinal lirae on the flanks as well as delicate growth lines; the
growth lines form ventral and dorsolateral sinuses and a ventrolateral salient. During
early growth stages, prominent ribs extend from the umbilicus across the venter but, at
maturity, ribs are confined to the vicinity of the umbilicus and the ventrolateral
shoulders].