Cretaceous Period, circa 150 million years B.P. A group of four Douvilleiceras sp. fossil ammonites (sometimes known as goat horn), polished to reveal rich calcites and striking suture patterns; held in a white card collector's tray. 60-77 grams, 50-55 mm width (272 grams total, 93 x 130 mm including tray) (2-2 1/4 in. (3 1/2 x 5 in.)). Jungles of Mahajanga, NE Coast of Madagascar. Acquired 1950s-1960s. Bristol paleontological collection. [4, No Reserve]