Supraordinal brachiopod classification

Three controversial problems of brachiopod supraordinal classification are discussed: the position of brachiopods in the classification of Metazoa, their classification at phylum and class level, and the classification of the articulate brachiopods. The position of brachiopods in the system of Metazoa remains uncertain. There are no strong reasons for changing the traditional division of the phylum Brachiopoda into the classes Inarticulata and Articulata. The class Articulata is divided into the subclasses Orthata, Strophomenata, Spiriferata, and Terebratulata.