Cephalopoda

Vaginoceras Hyatt, 1883

Selection of related publications
Balashov, Z. G. 1968. Ordovician Endoceratids from Soviet Union.
Sweet, W. C. 1958. The Middle Ordovician of the Oslo Region, Norway: 10. Nautiloid Cephalopods. Norsk Geologisk Tidsskrift 38, 1, 1-176.