ChaRMS taxon details
original description
Agassiz, A. (1864). Synopsis of the echinoids collected by Dr. W. Stimpson on the North Pacific Exploring Expedition under the command of Captains Ringgold and Rodgers. Proceedings of the Academy of Natural Sciences of Philadelphia. 15 (1863), 352-361., available online at https://www.biodiversitylibrary.org/page/1958617 [details]
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