New Late Aptian Ammonites of the Northwestern Caucasus
Journal: Works of Georgian Technical University
Year: 2025

The new representatives of extinct ammonite cephalopods described in the article ,although they belong to different systematic groups, also have common features: small size, rarity and a limited range of stratigraphic distribution - known in the Upper Aptian zone Acanthohoplites nolani (Pseudojauberticeras egoiani Scharik., Paradiadochoceras fragosum Sharik., P.finitimum Scharik., Hokodziceras druschitsi Scharik.). Based on morphogenetic studies, the main trends in their onto-phylogenetic develo