Fossil Spinosaurus Dinosaur Tooth Group Cretaceous Period, 125-113 million years B.P. A mixed group of three Spinosaurs maroccanus fossil teeth with remains of enamelling; held in white card collector's trays. 90 grams total, 36-77 mm (1 3/8 - 3 in.). From a Lincolnshire, UK, collection. The Spinosaurus was both a beachcomber type scavenger and an active hunter taking small stranded plesiosaurs, pterosaurs, turtles and large fish. [3, No Reserve]