PERMIAN AMMONOIDS: CLASSIFICATION AND PHYLOGENY

Abstract

The main evolutionary trends in the Permian ammonoids are traced, and the systematics of this group is revised at the ordinal, family, and generic levels. All Permian species and their stratigraphie and geographic ranges are listed. The phylogenetic relationships within all Permian ammonoid families are discussed. For a number of them, new phylogenetic reconstructions are made.