Phylloceratidae
Phylloceratidae is the predominant family of the Phylloceratina with some 15 or more genera found in rocks ranging from the Lower Jurassic to the Upper Cretaceous. Members of the Phylloceratidae are characterized by smooth, involute shells with very thin walls. Many are covered with fine growth lines but are usually without ribbing. Sutures are complex with the major and minor branches of the saddles with phylloid or spatulate endings.
| Phylloceratidae Temporal range: | |
|---|---|
| Fossil shells of Phylloceras serum from Southern Alps, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Superfamily: | †Phylloceratoidea |
| Family: | †Phylloceratidae Zittel, 1884 |
| Subfamilies | |
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