Tag

Endothermy

All articles tagged with #endothermy

science1 year ago•3 min saved

"Warm-Blooded Dinosaurs Emerged 180 Million Years Ago, Study Reveals"

Researchers have found that certain dinosaur groups, such as theropods and ornithischians, evolved warm-bloodedness as they migrated to cooler regions during the Early Jurassic period. This adaptation likely helped them survive drastic climate changes, including the Early Jurassic Jenkyns Event, which caused extreme global warming. The study suggests that these adaptations may have contributed to the rise of avian endothermy, tracing back to the earliest ancestors of modern birds.

via Ars Technica|

#climate-change #dinosaurs #endothermy

science2 years ago•4 min saved

Megalodon: The Warm-Blooded Terror of the Seas.

New research on fossilized teeth of megalodon, a large predatory shark that lived 4 million years ago, suggests that it regulated its body temperature and was at least partially endothermic. The study used isotope clumping to estimate the temperature at which the teeth formed and found that megalodon consistently had a body temperature about 7°C warmer than cold-blooded fish. This could have helped the shark maintain its growth rates and swim faster, but also made it vulnerable to climate change.

via Ars Technica|

#body-temperature #endothermy #fossil-teeth

paleontology2 years ago•4 min saved

Ancient bird-like dinosaurs nested communally, study shows.

Fossilized eggshells have revealed that Troodon, a bird-like dinosaur that lived up to 74 million years ago, shared communal nests where several female nestmates often laid more than 20 eggs together, which these feathery dinos then brooded to keep warm. The dinosaurs were endotherms, meaning they were warm-blooded and could self-regulate their body temperature. They could probably switch between a warm-blooded state and a state of cold-blooded torpor — a strategy common in modern birds, called heterothermy. The finding sheds light on the evolutionary transition from cold-bloodedness to endothermy in dinosaurs.

via Livescience.com|

#communal-nests #dinosaurs #eggshells