Polyptychites
| Polyptychites Temporal range: Early Cretaceous (Valanginian)
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| Scientific classification | |
| Kingdom: | |
| Phylum: | Mollusca
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| Class: | Cephalopoda
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| Subclass: | |
| Order: | |
| Superfamily: | Perisphinctaceae
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| Family: | |
| Genus: | Polyptichites
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Polyptichites is the perisphictacean ammonite genus from the Lower Cretaceous of Russia. The shell is subinvolute and coarsely ribbed; ribs bifurcate or trifurcate mid or low on the flanks and cross over the rounded venter. The umbilicus is relatively small and deep. Outer whorls partially envelop the previous leaving a fairly deeply impressed dorsum.
References[]
- Polyptichites, jsdammonites.fr [1]
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Categories:
- Cretaceous ammonites
- Ammonitida
- Fossils of Russia
- Valanginian life
- Prehistoric cephalopod stubs