Traits taxon details
original description
Foerste A.F. (1926). Actinosiphonate, trochoceroid and other cephalopods. <em>Denison University Bulletin, Journal of the Scientific Laboratories.</em> 21: 285–383. [details]
basis of record
Frye, M. W. (1987). Upper Ordovician (Harjuan) oncoceratid nautiloids from the Boda Limestone, Siljan District, Sweden. <em>Geologiska Föreningen i Stockholm Förhandlingar.</em> 109(1): 83-99., available online at https://doi.org/10.1080/11035898709454748 page(s): 93 [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): 59 [details] Available for editors 
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