Cephalopoda

Ancistroceras Boll, 1857

Selection of related publications
Aubrechtová, M., Meidla, T. 2020. Lituitid cephalopods from the upper Darriwilian and basal Sandbian (Middle–Upper Ordovician) of Estonia. GFF , 1-30. DOI:10.1080/11035897.2020.1762723
Mutvei, H. 1997. Siphuncular structure in Ordovician endocerid cephalopods. Acta Palaeontologica Polonica 42, 3, 375-390.
Balashov, Z. G. 1968. Ordovician Endoceratids from Soviet Union.
Balashov, Z. G. 1953. Svernutye i polusvernutye nautiloidei ordovika Pribaltiki. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) , 217-300. Stratigraphy and fauna of the Ordovician and Silurian West Russian Platform, pp. 217-300.