Traits taxon details
original description
(of ) Troedsson G.T. (1926). On the Middle and Upper Ordovician Faunas of Northern Greenland. 1. Cephalopods. <em>Meddelelser om Gronland.</em> 71: 1-157. page(s): 126 [details]
basis of record
Evans, D. H. (2005). The Lower and Middle Ordovician cephalopod faunas of England and Wales. <em>Monographs of the Palaeontographical Society.</em> 158(623): 1-77., available online at https://doi.org/10.1080/25761900.2022.12131803 [details] Available for editors 
additional source
Kröger, B. (2025). The Lyckholm acme of cephalopods – Review of the late Katian (Vormsi–Pirgu regional stages) Ordovician cephalopods of Estonia. <em>European Journal of Taxonomy.</em> 978: 1-169., available online at https://doi.org/10.5852/ejt.2025.978.2801 page(s): 15 [details] Available for editors 
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