Keyword "PHOSPHORITES" in:

Lydite rocky-bottom (Upper Cretaceous) at Hostouň near Kladno
J. Žitt, O. Nekvasilová, volume 33, 2000 (GRR for 1999), pages 89–91
pdf (0.31 MB)

An exposed Cretaceous cliff at Plaňany near Kolín (Bohemian Cretaceous Basin)
V. Vlačicha, volume 33, 2000 (GRR for 1999), pages 138–140
pdf (0.29 MB)

Occurrences of phosphorites in the coastal area of the Bohemian Cretaceous
J. Žítt, volume 26, 1993 (GRR for 1992), pages 86–87
pdf (0.09 MB)