1954 Sporadoceras cf. heterolobatum.-Petter, p.12.
1959 Sporadoceras longilobatum Petter, p.276, pl.22 fig.11-
11a, textfig.58B.
1988 Sporadoceras longilobatum.-Ruan: 252, , text-fig.78,
pl.64 fig.1.

Dimensions from Petter (1959)

D = 47 mm, H = 27 mm, E = 32 mm, Ha = 14 mm

Globular shell with a punctiform umbilicus. The whorls have an elliptical cross-section that remains wider than it is tall, at least up to a diameter of 50 mm. The flanks are rounded, as is the broad outer side. Traces of spiral ornamentation are visible.