Theories on Spinosaurus - The Sail-Backed Dinosaur
Spinosaurus was one of the most spectacular looking meat-eating dinosaurs. Like most of the big carnivores, fossils of this bizarre animal are extremely rare. As animals move up the food chain, their numbers become smaller and they make up an ever decreasing proportion of the ecosystem, which means it is less likely for any of them to be preserved as fossils. For example, scientists in Canada and the western United States can conduct studies on duck-billed dinosaurs (herbivores) that involve hundreds of skeletons, yet in contrast there are only about 30 known fossils of Tyrannosaurus rex.
Spinosaurus is even less well-known, this is because a number factors have conspired to leave us with little fossil evidence of this dinosaur.
Spinosaurus was one of the most spectacular looking meat-eating dinosaurs. Like most of the big carnivores, fossils of this bizarre animal are extremely rare. As animals move up the food chain, their numbers become smaller and they make up an ever decreasing proportion of the ecosystem, which means it is less likely for any of them to be preserved as fossils. For example, scientists in Canada and the western United States can conduct studies on duck-billed dinosaurs (herbivores) that involve hundreds of skeletons, yet in contrast there are only about 30 known fossils of Tyrannosaurus rex.
Spinosaurus is even less well-known, this is because a number factors have conspired to leave us with little fossil evidence of this dinosaur.