Traits taxon details
original description
Collins, R. L. (1934). A monograph of the American Tertiary pteropod mollusks. <em>Johns Hopkins University Studies in Geology 11: 137-234.</em> page(s): 227, pl. 14 figs 2-5 [details]
additional source
Garvie, C. L.; Goedert, J. L.; Janssen, A. W. (2020). Paleogene and Late Cretaceous Pteropoda (Mollusca, Gastropoda, Heterobranchia) from North America. <em>Zootaxa.</em> 4782(1): 1-115., available online at https://doi.org/10.11646/zootaxa.4782.1.1 page(s): 75, pl. 11 figs n-p [details] Available for editors 
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