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Pronunciation varies by accent · noun
Any theropod of the clade Tetanurae, all theropods, including birds, that are more closely related to modern birds than to the genus †Ceratosaurus..
The oldest tetanuran, the crested allosauroid Cryolophosaurus, was discovered in Lower Jurassic rocks on Antarctica and is quite similar to allosauroids from Upper Jurassic rocks on several continents.
During Late Cretaceous times, the top predators in most Laurasian terrestrial ecosystems were the large-bodied tyrannosaurids, which suggests that this tetanuran clade may have originated after the split between Laurasia and Gondwana.
Use tetanuran when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Tetanuran means Any theropod of the clade Tetanurae, all theropods, including birds, that are more closely related to modern birds than to the genus †Ceratosaurus..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
The oldest tetanuran, the crested allosauroid Cryolophosaurus, was discovered in Lower Jurassic rocks on Antarctica and is quite similar to allosauroids from Upper Jurassic rocks on several continents.
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