Fossil KILLER RAPTOR DINOSAUR TOOTH - DELTADROMEUS

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NEOVENATOR Possibly the UK's biggest killer dinosaur. It once roamed the areas of Southern England around 120 million years ago, preying on the herds of Iguanodon and also, I would imagine, the numerous long necked sauropods that were around at this time. It is related to the T-Rex busting Carcharodontosaurus. KILLER RAPTOR An AFRICAN Dromaeosaur THIS IS A GENUINE FOSSIL DINOSAUR TOOTH Initial Finds: The first Dromaeosaurid remains described were those of dromaeosaurus running reptile albertensis, which was discovered near the Red Deer River by Barnum Brown in 1914. It was another 50 years before more material was found that could put these dinosaurs in to their own context and group, as some had labelled them initially as Carnosaurs and others as slender running Coelurosaurs. Not until 1964 did things improve following the discovery by Professor J. Ostrom and Grant Meyer of more bones in North Montana. This new species was labelled Deinonychus - terrible claw. This proved to show that Dromaeosuars showed similarities with both carosaurs and coelurosaurs. Deinonychus (terrible claw) antirrhopus: Deinonychus Described: Possibly the best known of all dromaeosarids, following Jurassic Park's adaptation of Velociraptor, having been described in great detail by Professor John Ostrom. Typical characteristics include a large head with backwardly facing curved teeth, long powerful arms and the notorious sickle shaped second toe. In life it would have held the toe vertically in order to protect the sharp point of the claw. The discovery of Deinonychus helped with the identification and classification of Velociraptor. Anatomy: As Deltadromeus is such a new species, the anatomy of dromeasaurs is best described by the species deinonychus, as this species has been well documented. Large but lightly built head with large openings in it's sides for eyes (understood to be a sharp eyed predator) and powerful muscles of it's jaws (both for the capita-mandibularis (for when the jaws were closed to hold them together tight) and the pterygoideus muscles (for a powerful bite)). Large teeth with serrated edges for cutting through flesh and strongly curved backwards. Slender, sharply curved neck that allowed a great deal of flexibility. Back and tail held stiffly by powerful ligaments. Long arms with three fingered hands with powerful curved talons. Upper arm bone (humerus) shows roughened patches for large muscle attachments to the chest area. Upper leg bone (femur) is quite short in comparison to the tibia and fibula, which is usually associated with fast running animals. The foot bones are modified for walking on two forward facing toes (unlike other bipedal dinosaurs). The most impressive feature is the second toe, which is a formidable weapon. Another unusual feature about Deinonychus is it's tail. Between the lower vertebrae of the tail are wedge shaped, chevron; bones, which have thin long forward facing rods which overlap other vertebrae. As the vertebrae were not fused the tail was still flexible but stiff. The muscles within the tail must have allowed swift movement as they relaxed and contracted in order to counter balance the weight at the front half of the body. Other interesting observations would seem to indicate that these dinosaurs were pack hunters. Fossil Information: This tooth comes from the Kem Kem region of Morocco. The tooth measures aprox. 2.5 cm long . This is a nice example of a tooth with some nice serrations on both sides of the tooth. Fantastic enamel and a slightly, narturally worn tip. A very ice raptor tooth! This tooth comes from a raptor called deltadromeus agilis . Deltadromeus agilis (agile delta runner) was a huge and incredible raptor dinosaur. Believe it or not, this dinosaur has been measured at being around 13 m long - now that's longer than T-Rex! It's delicate build made it a fast moving predator. Research regarding this dinosaur still continues.... s... read more

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