Kroh, A.; Mooi, R. (2024). World Echinoidea Database. Pygorhytidae Lambert, 1909 †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=510823 on 2024-05-09
additional sourceMintz, L. W. (1968). Echinoids of the Mesozoic families Collyritidae d'Orbigny, 1853 and Disasteridae Gras, 1848. <em>Journal of Paleontology.</em> 42: 1272-1288. page(s): 1278 [details]