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Updated: May 5, 2025
The Lower White Chalk, which is several hundred feet thick, without flints, has yielded 25 species of Ammonites, of which half are peculiar to it. The genera Baculite, Hamite, Scaphite, Turrilite, Nautilus, Belemnite, and Belemnitella, are also represented. Ammonites Rhotomagensis. Chalk marl. Turrilites costatus, Lam. Lower chalk and chalk marl. a. Scaphites aequalis.
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