This pair of fossil dinosaur vertebrae includes a Spinosaurus caudal vertebra and a Dromaeosaur thoracic vertebra. We can tell the Dromaeosaur vertebra is from an adult dinosaur because the processes and faces are fully ossified which is not the case in juvenile dinosaurs. Both of these bones are great teaching aids or would make impressive display fossils next to teeth, which of course, are more common than the bones. The condition keeps them affordable yet, dinosaur bones are far more scarce than teeth, and seldom found. These are affordable and fascinating Spinosaurus and raptor Dromaeosaur dinosaur bones to add to a collection of any kind.