Меловой период

Manso C.L.C. (2020) A new Cassiduloid (Echinodermata, Echinoidea) in the Albian of the Sergipe-Alagoas basin, Brazil // Carnets Geol., Madrid, vol. 20, no. 3, p. 29-35.

http://paleopolis.rediris.es/cg/2003/index.html