1.
Regular Echinoids from the Turonian and the Coniacian (Upper Cretaceous) of the Mons bassin (Belgium)
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The genus Temnocidaris (Echinoidea, Cidaroida) in the Upper Cretaceous and Lower Tertiary of the Maastricht Area (Belgium and The Netherlands)
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Holectypoid echinoids from Cenomanian and Turonian strata in the Mons Basin (Belgium). 1. Discoides
Holectypoid echinoids from Cenomanian and Turonian strata in the Mons basin (Belgium). 2. Conulus
A Pygasteroid Echinoid from Cenomanian strata in the Mons Basin (Belgium)