Cephalopoda

Ormoceras Stokes, 1840

Selection of related publications
Saladžius, V. J. 1971. Cephalopods of the Ludlowian and Downtonian deposits of the Upper Silurian of the Southern Baltic area. Palaeontology and stratigraphy of the Baltic and the Byelorussia, No III, pp. 205-208.
Sweet, W. C. 1958. The Middle Ordovician of the Oslo Region, Norway: 10. Nautiloid Cephalopods. Norsk Geologisk Tidsskrift 38, 1, 1-176.
Balashov, Z. G. 1955. Nekotorye novye rody i vidy nautiloidej ordovika Pribaltiki. Voprosy paleontologii II, 45-54.
Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö].
Teichert, C. 1930. Die Cephalopoden-Fauna der Lyckholm-Stufe des Ostbaltikums. Paläontologische Zeitschrift 12, 3/4, 264-312. DOI:10.1007/BF03044452