J Hofker (1966)
Siderolites calcitrapoides Lamarck and Siderolites laevigata Reuss in the Tuff Chalk of Maastricht, especially in the type-section. Section I
Natuurhistorisch Maandblad, vol. 55 p. 140-142.
19963, .93, .94, MEUSE2, CRET, PALMIC
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