Researcher: Dinosaurs lack turbinates—nasal cavity bone structures in warm-blooded species that minimize water loss during breathing. █████████ ██ ████ ████████████████ ████ ███████ ████ ███ █████████ ████ █████████████ █████ ███████████████ ████ ██ █████████ ████████ ███ ██████ ███████ ████ ████ ████ ████████ ███████ █████ ██ █████████ ███ ███████ █████ ████████████ ████ █████ █████████ ████ ████████████ ███████ █████ ███████ ████ █████████████
The author rejects the paleobiologists’ belief that all dinosaurs were cold-blooded. Since some dinosaurs lived in places where only warm-blooded animals could survive, the author implies that some dinosaurs must have been warm-blooded.
It’s a premise. The author uses the claim that only warm-blooded animals could survive in those areas to prove that the dinosaurs that lived in those areas were not cold-blooded.
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