Cephalopoda

Hemiphragmoceratidae Foerste, 1926

Selection of related publications
Mutvei, H. 2015. Characterization of two superorders Nautilosiphonata and Calciosiphonata and a new order Cyrtocerinida of the subclass Nautiloidea; siphuncular structure in the Ordovician nautiloid Bathmoceras (Cephalopoda). GFF 137, 3, 164-174. DOI:10.1080/11035897.2015.1061592
Stridsberg, S. 1985. Silurian oncocerid cephalopods from Gotland. Fossils and Strata 18, 1-65.