MolluscaBase taxon details
original description
Gardner, J.A. (1947) The molluscan fauna of the Alum Bluff Group of Florida. Part VIII. Ctenobranchia (remainder), Aspidobranchia, and Scaphopoda. United States Geological Survey Professional Paper, 142H, 493–656, pls. 52–62., available online at https://pubs.usgs.gov/pp/0142h/report.pdf [details]