Published December 20, 2021
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Fig. 25 in Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities
Creators
- 1. Finnish Museum of Natural History, University of Helsinki, PO Box 44, FI-00014 Helsinki, Finland.
- 2. Paläontologisches Institut und Museum, University of Zurich, Zurich, Switzerland.
Description
Fig. 25. Bactroceras boliviensis Aubrechtová, 2015, from bed PO 131, from the Olenidsletta Member, Floian, Ordovician, Profilstranda section, Ny Friesland, Spitsbergen. A. Specimen FMNH-P30430, lateral view of body chamber with dorsomyarian muscle impression at base ventral, prosiphuncular side toward the left. B. Specimen FMNH-P30231, view of ventral, prosiphuncular side. C. Specimen FMNH-P30248, lateral view of specimen with partly cyclic spacing of ornamentation; ventral, prosiphuncular side toward the right. D. Specimen FMNH-P30215, with fine transverse ornamentation; ventral, prosiphuncular side toward the right. Scale bar = 10 mm for all figures.
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