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They were warm-blooded, more like modern mammals or birds than modern reptiles. They were neither cold-blooded nor warm-blooded in modern terms, but had metabolisms that were different from and in some ways intermediate between those of modern cold-blooded and warm-blooded animals. They included animals with two or three of these types of ...
Dinosaurs were initially cold-blooded, but global warming 180 million years ago may have triggered the evolution of warm-blooded species, a new study found. ... for example, cold-blooded animals ...
Through the first half of the 20th century, before birds were recognized as dinosaurs, most of the scientific community believed dinosaurs to have been sluggish and cold-blooded. Most research conducted since the 1970s, however, has indicated that dinosaurs were active animals with elevated metabolisms and numerous adaptations for social ...
The Dinosaur Heresies: New Theories Unlocking the Mystery of the Dinosaurs and Their Extinction is a 1986 book written by Robert T. Bakker [1] [2] exploring extant evidence indicating that dinosaurs, rather than being cold-blooded and wholly lizard-like, were warm-blooded, agile creatures more similar to modern birds than to lizards or other reptiles.
Fossils have revealed that dinosaurs lived year-round in cold climates like the Arctic. ... Clues from fossilized eggshells and bones have now suggested that some dinosaurs were warm-blooded and ...
But scientists observed differences between the two big groups of dinosaurs, finding that Triceratops were cold-blooded and T-Rex warm-blooded.
In a series of scientific papers, books, and popular articles in the 1970s and 1980s, beginning with his 1968 paper "The superiority of dinosaurs", [17] Robert Bakker argued strenuously that dinosaurs were warm-blooded and active animals, capable of sustained periods of high activity. In most of his writings Bakker framed his arguments as new ...
A recent study has determined that dinosaurs may have been warm-blooded based on a re-assessment of previous research on animals? growth and metabolic rates.