Traits taxon details
original description
Ulrich, E. O.; Foerste, A. F.; Miller, A. K.; Unklesbay, A. G. (1944). Ozarkian and Canadian Cephalopods: Part III: Longicones and Summary. <em>Geological Society of America Special Papers.</em> 59: 1-226., available online at https://doi.org/10.1130/spe58 page(s): 117 [details] Available for editors 
new combination reference
Crick, R. E. (1981). Diversity and evolutionary rates of Cambro-Ordovician nautiloids. <em>Paleobiology.</em> 7(2): 216-229., available online at https://doi.org/10.1017/s0094837300003997 [details]
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