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$《 Safari File Edit View History Bookmarks Window Help Wed 3:32 PM a E en.wikipedia.org Solnhofen marina scene sketches by Midiaou on DeviantÄrt Montanaspinus inexpectus -Wikipedia, the free encyclopedia Parasaurolophus with missing lap messaged Paleoflocks Not logged in Talk Contributions Create account Login Article Talk Read Edit View history Search 雓 WiKIPEDIA Montanaspinus inexpectus The Free Encyclopedia From Wikipedia, the free encyclopedia Main page Contents Featured content Current events Random article Donate to Wikipedia Wikipedia store Interaction Montanaspinus (meaning "Montana's spine") is a genus of theropod dinosaur that was found in what is now Montana, in the Hell Creek formation. Unlike any other spinosaurid found, it had survived into the upper Maastrichtian of the Cretaceous period, about 72.1 to 66 million years ago. This genus was discovered shortly before the American Civil War and like it's more famous cousin, Spinosaurus, it's remains were destroyed in the war Montanaspinus is thought to be one of the largest theropods from the Hell Creek formation. Estimates published in 2015, suggest that it was roughly 13.3-19 meters (30.8-38.7 feet) in length and up to 5.5 tonnes, making it a very robust spinosaurid. New fossils discovered in 2015 suggest that Montanaspinus, and other spinosaurids, were bipedal. Much like every other theropod known. The skull of Montanaspinus was long and narrow, similar to that of a crocodile. Scientists believe that Montanaspinus was mainly piscivorous. With only a fraction of a sail discovered, we can assume that Montanaspinus looked vaguely similar to its relative, Ichthyovenator Description [edit] Help About Wikipedia Community portal Recent changes Contact page Not much is known about Montanaspinus, as it is a new discovery. The fossils do show possible signs of integument, but it is too soon to know for sure Discovery [edit] The discovery of Montanaspinus was major. It suggests that spinosaurids had made their way to North America. Tools What links here Related changes Upload file Special pages Permanent link Page information Cite this page Locomotion [edit ] Because the new fossils of Montanaspinus possessed several vertebrae often missing in other spinosaurids, we now know that we can safely assume that spinosaurids had walked bipedally. Most scientists use this information to reject the often depicted "knuckle-walking Spinosaurus." Print/export Create a book Download as PDF Printable version This page was last modified on 27 July 2016, at 19:28 Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. Privacy policy About Wikipedia Disclaimers Contact Wikipedia Developers Cookie statement Mobile view WIKIMEDIAMediaWiki Add links 19 27$