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Arca, perhaps A. Gabrielis, d'Orbigny, "Pal. Franc." Mr. Pentland made a collection of shells from this same spot, and Von Buch considers them as consisting of: Trigonia, resembling in form T. costata. Pholadomya, like one found by M. Dufresnoy near Alencon. Isocardi excentrica, Voltz., identical with that from the Jura.
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