The Cretaceous beds of Patagonia contain the most comprehensive record of non-avian theropods from the Southern Hemisphere. This includes Megaraptora, a clade of medium-sized, highly pneumatized th…| Letters from Gondwana.
Therizinosauria is a group of unusual theropod dinosaurs known from Cretaceous deposits in Asia and North America. The clade exhibits unique features, including lanceolate teeth, a rostral rhamphotheca, and a broad, opisthopubic pelvis. Some of those characteristics are associated with a shift in dietary preferences and an adaptation to herbivory. But the most striking feature, […]| Letters from Gondwana.