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tetanurae
Tetanurae, or "stiff tails", is a clade that includes most theropod dinosaurs, including birds. Tetanurans (or tetanurines) first appear during the early or middle Jurassic Period.
==Definition==
Tetanurae meaning "stiff tails", was named by Jacques Gauthier in 1986 for a large group of theropod dinosaurs. Gauthier's paper was the first serious application of the science of cladistics to vertebrate paleontology.
Tetanurae is defined as all theropods more closely related to modern birds than to ''Ceratosaurus''. Gauthier originally classified two main groups within the larger group Tetanurae: Carnosauria and Coelurosauria. However, many of what he considered carnosaurs have been since been re-classified as coelurosaurs or primitive tetanurans by later research.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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