Phylloceratina

Phylloceratina

The Phyllocertina comprise a suborder of ammonoid cephalopods, belonging to the Ammonitida, whose range extends from the Lower Triassic to the Upper Cretaceous. Shells of the Phylloceratina are generally smooth with small to large umbilici and complex sutures with leaf-like phylloid saddle endings and lobes with thorn-like projections.

Read more about Phylloceratina:  Phylogeny

Other articles related to "phylloceratina":

Ammonitida
... The Ammonitida are divided into four suborders, the Phylloceratina, Lytoceratina, Ancyloceratina, and Ammonitina ... The Phylloceratina is the ancestral stock, derived from the Ceratitida near the end of the Triassic ... The Phylloceratina gave rise to the Lytoceratina near the beginning of the Jurassic which in tern gave rise to the highly specialized Ancyloceratina near the end of the Jurassic ...
Phylloceratina - Phylogeny
... The Phylloceratina are most likely derived from the Ceratitid Deineroceratidae, which is though to have given rise early in the Triassic to the Ussuritidae ... The Ussuritidae is the ancestral family of the Phylloceratina ... The Phylloceratina gave rise early in the Jurassic through the Phylloceratidae to the Lytoceratina, which in tern gave rise to most of the Ammonitina The Phylloceratidae also gave ...