Pachydiscus
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| phylum | Mollusca | Pachydiscus is an extinct ammonite genus from the Upper Cretaceous with a world-wide distribution. Altogether some 28 species have been described.
The shell of Pachydiscus is compressed and high-whorled, with an oval or flat sided section. Ribs tend to be differentiated into short umbilical and separate ventro-lateral sets, with a smooth area between. For more information, visit the Wikipedia entry. Get back to Cephalopoda |
| class | Cephalopoda | |
| order | Ammonitida | |
| family | Pachydiscidae | |
| genus | Pachydiscus | |
| Temporal range | Late Cretaceous |
