Phylloceratina
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Phylloceratina Temporal range:
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Fossil shells of Phylloceras serum from Southern Alps, on display at Galerie de paléontologie et d'anatomie comparée in Paris
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Suborder: | †Phylloceratina |
Families | |
The Phylloceratina comprise a
Phylogeny
The Phylloceratina are most likely derived from the Ceratitid Deineroceratidae, which is thought to have given rise early in the Triassic to the Ussuritidae. The Ussuritidae is the ancestral family of the Phylloceratina. The Ussuritidae extend through the Upper Triassic but not into the Jurassic, and gave rise to the Upper Triassic Discophyllitidae. The Discophyllitidae is the probable source for the L Jurassic - U Cretaceous Phylloceratidae and possibly for the L Jurassic Juraphyllitidae.
The Phylloceratina gave rise early in the Jurassic through the Phylloceratidae to the Lytoceratina, which in turn gave rise to most of the Ammonitina The Phylloceratidae also gave rise to the Psiloceratoidea at the beginning of the Jurassic and to the Desmoceratoidea in the Early Cretaceous, both of which are considered Ammonitina. The Ancyloceratina is a collection of highly evolved Lytoceratina.
References
- ^ Treatise on Invertebrate Paleontology Part L Mollusca 4, Ammonoidea, 1957