Fig. 36 in Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities

• Main Authors: Kröger, Björn, Pohle, Alexander
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Cephalopoda; Tetrabranchia; Cyptendoceratidae; Catoraphiceras; Protocycloceratidae; Protocycloceras; Ny Friesland; Spitsbergen
• Online Access: https://zenodo.org/record/5793532; https://doi.org/10.5281/zenodo.5793532

Fig. 36. Protocycloceratid cephalopods from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A. Protocycloceras sp. FMNH-P30417, lateral view, from bed PO 123.3. B–C, E–H. Protocycloceras minor sp. nov. B, E–F. Specimen FMNH-P30411, holotype, from bed PO 131. B. Ventral view, prosiphuncular side. C. Specimen FMNH-P30412, from bed PO 131, with details of ornamentation well preserved. D. Catoraphiceras sp., FMNH-P30425, from bed PO 131, oblique lateral view. E. Adoral view of holotype with septal perforation visible. F. Fragment of holotype with chamber spacing G. Specimen FMNH-P30413 showing the shape of the septal curvature, dorsal view, antisiphuncular side. H. Specimen FMNH-P30410, with conch surface well preserved. I. Protocycloceras lamarcki (Billings, 1859), FMNH-P30418, from bed PO 04, with poorly preserved conch surface. Scale bars = 5 mm. Published as part of Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783 (1) on page 54, DOI:10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422