Subclass Plectronoceratia nom. correct. Wade, 1988a |
Order Plectronoceratida Flower, 1964a |
Order Yanheceratida Chen and Qi in Chen, Tsou, Chen and Qi, 1979 |
Order Protactinoceratida Chen and Qi in Chen, Tsou, Chen and Qi, 1979 |
Subclass Multiceratia nom. correct. Mutvei, 2013b |
Order Ellesmeroceratida Flower in Flower and Kummel, 1950 |
Order Cyrtocerinida Flower, 1964a |
Order Bisonoceratida Evans and King, 2012m |
Order Oncoceratida Flower in Flower and Kummel, 1950 |
Order Discosorida Flower in Flower and Kummel, 1950 |
Subclass Tarphyceratia nov.c |
Order Tarphyceratida Flower in Flower and Kummel, 1950d |
Order Ascoceratida Kuhn, 1949e |
Subclass Nautilia nom. correct. Wade, 1988 |
Order Nautilida Agassiz, 1847f |
Subclass Orthoceratia nom. correct. Teichert, 1967g |
Order Rioceratida nov.h |
Order Dissidoceratida Zhuravleva, 1964i |
Suborder Dissidoceratina Zhuravleva, 1964 |
Suborder Troedssonellina Kobayashi, 1935 |
Order Orthoceratida Kuhn, 1940 |
Order Pseudorthoceratida Flower and Caster, 1935j |
Order Actinoceratida Teichert, 1933 |
Order Astroviida Zhuravleva and Doguzhaeva, 2004k |
Suborder Lituitina Starobogatov, 1983l |
Suborder Pallioceratina Marek, 1998k |
Order Endoceratida Teichert, 1933m |