Crioceratites (Binelliceras) binelli: This
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0253-6730 |
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https://treatment.plazi.org/id/AC3187BA-FFCD-FFE9-3202-FCA03ED97216 |
treatment provided by |
Carolina |
scientific name |
Crioceratites (Binelliceras) binelli: This |
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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.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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