additional sourceSchlüter, N.; Wiese, F. (2017). Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain. <em>Zootaxa.</em> 4306(2): 261., available online athttps://doi.org/10.11646/zootaxa.4306.2.6[details] Available for editors