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Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event that killed off all non-avian ...
Among the 14 small mammal species from the early Miocene locality of the northern area of the Junggar basin (northern Xinjiang, China), four species are cricetids (...
roodontids are a group of small theropods characterized by long legs and enlarged braincases [1]. Although phylogenetic analyses have varied to some extent in their placement of the Troodontidae, t...
Ceratopsid dinosaurs represent one of the best known dinosaur groups in the Late Cretaceous, and their unquestionable fossil re -cords are exclusively restricted to western North America. Here we repo...
The last two decades have witnessed great advances in recons tructing the transition from non-avian theropods to avians, but vie ws in opposition to the theropod hypothesis still exist. Here we hig...
Ta r k a and Tarkadectes are Middle Eocene mammals known only from the Rocky Mountains region of North America. Previous work has suggested that they are members of the Plagiomenidae, an extinct fam...

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