Schlüter, N., Kutscher, M., Smith, A.B., Jagt, J.W.M. and Lees, J.A. 2012. Late Cretaceous phymosomatids and the true identity of Cidarites granulosus Goldfuss, 1829 (Echinoidea, Phymosomatoida). Zootaxa. 3271, 1 (Apr. 2012), 17–30. DOI:https://doi.org/10.11646/zootaxa.3271.1.2.