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 on cladistic grounds in 1986 for a large group of theropod dinosaurs. Gauthier`s pape...
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http://en.wikipedia.org/wiki/Tetanurae
(from the article `dinosaur`) These comprise birds and all the theropods closer to birds than to Ceratosaurus. They would include the true carnosaurs and coelurosaurs described ...
Found on
http://www.britannica.com/eb/a-z/t/29
Tetanurans meaning stiff tail) are a major group of theropods . The rear part of the tails of these bipedal meat-eaters were stiffened by interlocking zygopophyses on the vertebrae. These saurischian , bipedal dinosaurs include the group Avetheropoda (bird-like dinosaurs, which includes allosauridae coelurasauria and the old group carnosauria ). Al...
Found on
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
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