1.
Kröger B, Pohle A. Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen – a pelagic fauna with Laurentian affinities. EJT [Internet]. 2021Dec.20 [cited 2022May22];783(1):1–102. Available from: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1601