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Large caenagnathid unguals are described from the Dinosaur Park (upper Campanian) and Frenchman (Maastrichtian) formations of Alberta and Saskatchewan, respectively. The latter constitutes the first formal description of Caenagnathidae from the Frenchman Formation. The Saskatchewan material is also notable for its large size, comparable to Anzu wyliei from the coeval Hell Creek Formation, placing...
Recent studies of the oceanic record suggest that the Earth was a global greenhouse during middle Cretaceous time. A review of topographic, sedimentary and biologic data pertaining to terrestrial mid-Cretaceous equatorial environments broadly supports the climatic inferences of marine studies. In particular, analyses of widely-occurring low latitude Saharan sediments support the Cretaceous greenhouse...
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