Protrochocyathus Alloiteau 1958

Alloiteau 1958. Contribution a la Systematique des Madreporaires fossiles, I (Texte) : 1-462 text-figs. 1-5; II (Illustrations) : figs. 1-286 pls. 1-20. Paris, 1957 1958: Unpaginated