Kroh, A.; Mooi, R. (2024). World Echinoidea Database. Phymosoma major Coquand, 1862 †. Accessed at: https://www.marinespecies.org/echinoidea/aphia.php?p=taxdetails&id=835991 on 2024-08-17
basis of recordAbdelhamid, M. A. M. (2014a). Middle–upper Cenomanian echinoids from north Wadi Qena, North Eastern Desert, Egypt. <em>Cretaceous Research.</em> 50: 138-170., available online athttp://dx.doi.org/10.1016/j.cretres.2014.04.010 page(s): 155 [details]