EVOLUTION OF BOREAL EARLY TRIASSIC DINARITACEANS (CERATITIDA)

Abstract

The evolutionary history of six genera of Early Triassic Boreal Dinaritaceae (Hypophiceras, Tompophiceras, Metophiceras, Sakhaitoides, Sakhaites, and Kelteroceras) is discussed, and patterns and pathways of their evolutionary transformations are established.