Fig. 27 in Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities
Fig. 27. Median sections of phragmocones of Bactroceras boliviensis Aubrechtová, 2015, from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. Note conical endisiphuncular lining in A–D. A. Specimen FMNH-P30215, from bed PO 131. B. Specimen FMNH-P30259, fr...
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Zenodo
2021
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Online Access: | https://dx.doi.org/10.5281/zenodo.5793505 https://zenodo.org/record/5793505 |