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  2. Synapsida - Wikipedia

    en.wikipedia.org/wiki/Synapsida

    The early synapsids spread and diversified, becoming the largest terrestrial animals in the latest Carboniferous and Early Permian periods, ranging up to 6 metres (20 ft) in length. They were sprawling, bulky, possibly cold-blooded, and had small brains. Some, such as Dimetrodon, had large sails that might have helped raise their body temperature.

  3. Therapsida - Wikipedia

    en.wikipedia.org/wiki/Therapsida

    Therapsida [a] is a clade comprising a major group of eupelycosaurian synapsids that includes mammals and their ancestors and close relatives. Many of the traits today seen as unique to mammals had their origin within early therapsids, including limbs that were oriented more underneath the body, resulting in a more "standing" quadrupedal posture, as opposed to the lower sprawling posture of ...

  4. Dicynodontia - Wikipedia

    en.wikipedia.org/wiki/Dicynodontia

    Dicynodonts have long been suspected of being warm-blooded animals. Their bones are highly vascularised and possess Haversian canals, and their bodily proportions are conducive to heat preservation. [9] In young specimens, the bones are so highly vascularised that they exhibit higher channel densities than most other therapsids. [10]

  5. Study reveals when the first warm-blooded dinosaurs ... - AOL

    www.aol.com/did-dinosaur-blood-run-hot-150006870...

    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.

  6. When the first warm-blooded dinosaurs roamed Earth

    lite-qa.aol.com/news/world/story/0001/20240515/...

    Warm-blooded creatures — including birds, who are descended from dinosaurs, and humans — keep their body temperature constant whether the world around them runs cold or hot. Cold-blooded animals, including reptiles like snakes and lizards, depend on outside sources to control their temperature: For example, basking in the sun to warm up.

  7. Warm-blooded - Wikipedia

    en.wikipedia.org/wiki/Warm-blooded

    Some fish have warm-blooded characteristics, such as the opah. Swordfish and some sharks have circulatory mechanisms that keep their brains and eyes above ambient temperatures and thus increase their ability to detect and react to prey .

  8. Researchers discover most dinosaurs were warm-blooded - AOL

    www.aol.com/researchers-discover-most-dinosaurs...

    But scientists observed differences between the two big groups of dinosaurs, finding that Triceratops were cold-blooded and T-Rex warm-blooded.

  9. Tritylodon - Wikipedia

    en.wikipedia.org/wiki/Tritylodon

    Any of the Tritylodonts including Tritylodon were warm-blooded or endothermic. Like most non- placental mammalimorphs, it had epipubic bones, aiding in its erect gait but preventing the expansion of the abdomen, making it unable to go through prolonged pregnancy and instead give birth to larval young like modern marsupials and monotremes .