Descriptions of new invertebrate fossils from the Mesozoic and Cenozoic rocks of Arkansas, Wyoming, Colorado, and UtahDOI: info:10.5479/si.00963801.137.157v. 3No. 137157–162
White, C. A. 1880. "Descriptions of new invertebrate fossils from the Mesozoic and Cenozoic rocks of Arkansas, Wyoming, Colorado, and Utah." Proceedings of the United States National Museum, 3, (137) 157–162. https://doi.org/10.5479/si.00963801.137.157.