Citation: Evans D.h, Siphonal and cameral deposits in Allumettoceras and the position of the Tripteroceratidae (Nautiloidea)., Palaontologische Zeitschrift Palaontologische Zeitschrift (Print);Journal of Palaontologische Gesellschaft Scientific contributions to palaeontology, 68(3/4), 1994, pp. 321-337
Citation: Evans D.h et Holland Ch.h, The nautiloid cephalopod Order Endocerida in the Silurian, Palaontologische Zeitschrift Palaontologische Zeitschrift (Print);Journal of Palaontologische Gesellschaft Scientific contributions to palaeontology, 69(3/4), 1995, pp. 343-352