Fig. 29 in Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities

• Main Authors: Kröger, Björn, Pohle, Alexander
• Format: Still Image
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Cephalopoda; Tetrabranchia; Rioceratidae; Svalbardocreas; Orthocerida; Baltoceratidae; Bactroceras; Ny Friesland; Spitsbergen
• Online Access: https://dx.doi.org/10.5281/zenodo.5793511; https://zenodo.org/record/5793511

Fig. 29. Median sections of phragmocones of Bactroceras Holm, 1898. A, C–D. Bactroceras fluvii sp. nov., from Profilbekken river basin, locality PR-phosphatic. A. Specimen FMNH-P30159, with adapical siphuncular segment, taphonomically slightly distorted.B. Bactroceras boliviensis Aubrechtová, 2015,...