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Spinosaurus Fossils For Sale

LATE CRETACEOUS PERIOD:  112 - 97 million years ago

dinospino8.jpgThe remains of Spinosaurus aegyptiacus were first described by a German paleontologist in 1912 in central Egypt.  A variety of pieces were recovered including a skull and teeth.  On the evening of April 24, 1944, a British bombing run on Munich destroyed these and many other rare fossil specimens.

Spinosaurus is estimated to have been THE LARGEST of all meat-eating dinosaurs that ever lived.  With a length of 41 to 59 feet long, 20 feet high and weight estimates from 4 to 20+ tons, it was truly a behemoth!  Spinosaurus was considered a bipedal dinosaur that is, one that walked on two feet although, its robust arms could have been used to allow the animal to walk on all fours at times.  An extremely long snout was lined with an array of straight, conical teeth.

Its most unusual feature was a row of broad club-shaped spines 6 feet tall, projecting upward from the backbone.  It's believed that these spines were covered with a sail of skin which could be raised by the creature as a social display or as a way to regulate body temperature.  Other theories suggest the back sported not a tall sail but a large hump, based on the robustness of the spiny dorsal processes of the vertebrae.  Theories also counter the notion that the sail was used to absorb heat and instead, was used to allow the body to cool more rapidly or even reflect heat from the hot, midday sun.     

dinospino5.jpgTo this day, no other dinosaur has been found with such tall and broad-shaped neural spines.  Fossil remains of Spinosaurus aegyptiacus are only found in the North African Sahara Desert.  Contrary to the inhospitable desert environment where Spinosaurus fossils are found today, this region was a vast swampy tropical paradise abundant with life during the Cretaceous Period when Spinosaurus was alive and inhabiting its muddy river shores and bogs.  Paleoecology studies of the area where Spinosaurus fossils are found indicates the environment was once a large tidal flood plain with scattered channels and mangrove forests.  This would have made Spinosaurus a creature like a modern crocodile where it spent part of its life in water and part on land.  The conical teeth and elongated snout of Spinosaurus indicate that, given the environment it lived in, most likely had a varied diet of not only terrestrial creatures but fish and other aquatic life, as well.