Traits taxon details
original description
Foerste, A. F. (1921). Notes on Arctic Ordovician and Silurian cephalopods, chiefly from Boothia Felix-King William Land, Bache Peninsula, and Bear Island. <em>Journal of the Scientific Laboratories of Denison University.</em> 19: 247-306. [details]
basis of record
Kröger, B.; Landing, E. (2007). The earliest Ordovician cephalopods of eastern Laurentia — Ellesmerocerids of the Hill Formation, eastern New York. <em>Journal of Paleontology.</em> 81(5): 841-857., available online at https://doi.org/10.1666/pleo05-166.1 [details] Available for editors 
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