Cretaceous Period, 145-65 million years B.P. A cut and polished Phylloceras velledae ammonite in two halves, displaying the distinctive pattern of the cross-section chambers; held in a white card collector's tray. 295-303 grams, 10.5-10 cm (597 grams total, 10 x 12.5 cm including tray) (4 in. (4 x 5 in.)). From Madagascar. Acquired 1930-1960. Collection of palaeontologist R. Gledhill. [2, No Reserve]