Rare, ferocious and 'Bigger Than T. rex'

Theropoda ". Related on MNN: Nizar Ibrahim first learned of the unidentified bones that might have belonged to Spinosaurus in Horner was quoted as saying: Interestingly enough, an iguanodont from the same place at almost the same time, Ouranosaurus, had a similar sail.

Giant Spinosaurus Was Bigger Than T. Rex—And First Dinosaur Known to Swim

The hypothesis of spinosaurs as specialized fish eaters has been suggested before by A. We don't really know where it came from. It is unclear whether Spinosaurus was primarily a terrestrial predator or a piscivore , as indicated by its elongated jaws, conical teeth and raised nostrils. In Ibrahim and colleagues , the specimens of Sigilmassasaurus was referred to Spinosaurus aegyptiacus together with "Spinosaurus B" as the neotype and Spinosaurus maroccanus was considered as a nomen dubium following the conclusions of the other papers.

Cretaceous Research. Ernst Stromer von Reichenbach has always been something of a "science hero" for me. On the other hand, the desert heat, sandstorms, snakes and scorpions make field work in North Africa very challenging at times. With the advantage of more expeditions and material, it appears that they pertain either to Carcharodontosaurus [21] or to Sigilmassasaurus.

Nearly million years before Spinosaurus, Dimetrodon not technically a dinosaur, but a type of synapsid reptile known as a pelycosaur sported a distinctive sail along its back. We all know about T. Eustreptospondylinae Eustreptospondylus. It is difficult to top the Spinosaurus saga, but the Sahara is still full of treasures.

Continue Reading. Retrieved 20 September Spinosaurus is the largest predatory dinosaur — about nine feet longer than the next largest predatory dinosaurs. Spinosaurus had many fragile bones. Cristiano Dal Sasso of the Civil Natural History Museum in Milan, Italy, analysed a snout acquired from a private collector, and previously unidentified bones from the upper rear of the skull.

Learn About Spinosaurus, the Sailed Dinosaur

It was swampy, with many rivers. Well, it is and it isn't. Below you'll discover 10 fascinating facts about Spinosaurus, ranging from its ten-ton size to the various types of sharp teeth embedded in its elongated snout. Jefferson, North Carolina: And now we know that Earth, apparently, once was home to a foot, swimming, carnivorous dinosaur.