2010Primogoniatites. - Korn, Bockwinkel & Ebbighausen, p. 145.

Diagnosis. Small conch, up to 50 mm in diameter. Early whorls subinvolute, slight closure of the umbilius at juvenile stages (< 5 mm conch diameter). External lobe parallel-sided, in lower half pouched. Median saddle moderately low. Ventrolateral saddle rounded, slightly asymmetrical. Adventive love V-shaped, asymmetrical.

Primogoniatites resembles Habadraites in conch shape and suture line, but Habadraites has a subtrapezoidal external lobe with diverging flanks, unlike the pouched external lobe with subparallel flanks in Primogoniatites.