Catalog of Recent Echinoid Type Specimens in the U.S. National Museum, Smithsonian Institution, and the Museum of Comparative Zoology, Harvard UniversityDOI: info:10.5479/si.03629236.264No. 2641–99
Downey, Maureen E. 1968. "Catalog of Recent Echinoid Type Specimens in the U.S. National Museum, Smithsonian Institution, and the Museum of Comparative Zoology, Harvard University." Bulletin of the United States National Museum, (264) 1–99. https://doi.org/10.5479/si.03629236.264.