Crioceratites (Binelliceras) binelli: This

Hoedemaeker, Philip, 2013, Genus Pseudothurmannia Spath, 1923 and related subgenera Crioceratites (Balearites) Sarkar, 1954 and C. (Binelliceras) Sarkar, 1977 (Lower Cretaceous Ammonoidea), Revue de Paléobiologie 32 (1), pp. 1-209 : 25

Crioceratites (Binelliceras) binelli: This species is

regarded as the ancestor of all species in the binelli group

and probably also of C. (B.) balearis . This species has

three ornamental ontogenetic stages:

1. The first stage has 5-6 intermediate ribs to one main rib. The main ribs are provided with lateral tubercles up to a diameter of 15 mm.

2. The second stage consists of thin, uniform ribs with 6-8 intermediate ribs to one main rib. Fasciculation from umbilical bullae and fibulation toward the ventrolateral tubercles frequently occur.

3. The third adult ornamental ontogenetic stage begins at a diameter of 45-50 mm. The irregularly spaced main ribs are slightly thicker than the 3-16 intermediate ribs to one main rib. They are bordered by shallow constrictions. The largest phragmocone ends at a diameter of 74 mm, which implies (Wh: wh = 7: 4) a total diameter of c. 125 mm.