Martharaptor greenriverensis, a New Theropod Dinosaur from the Lower Cretaceous of Utah
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Martharaptor greenriverensis, a New Theropod Dinosaur from the Lower Cretaceous of Utah
BACKGROUND The Yellow Cat Member of the Cedar Mountain Formation (Early Cretaceous, Barremian?) of Utah has yielded a rich dinosaur fauna, including the basal therizinosauroid theropod Falcarius utahensis at its base. Recent excavation uncovered a new possible therizinosauroid taxon from a higher stratigraphic level in the Cedar Mountain Formation than F. utahensis. METHODOLOGY/PRINCIPAL FIND...
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BACKGROUND The theropod dinosaur family Troodontidae is known from the Upper Jurassic, Lower Cretaceous, and Upper Cretaceous of Asia and from the Upper Jurassic and Upper Cretaceous of North America. Before now no undisputed troodontids from North America have been reported from the Early Cretaceous. METHODOLOGY/PRINCIPAL FINDINGS Herein we describe a theropod maxilla from the Lower Cretaceo...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2012
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0043911