Not hot- nor cold-blooded, dinosaurs were `in between`
New York: Were dinosaurs hot-blooded like birds and mammals or cold blooded like reptiles? Well, they were somewhere "in between".
Scientists evaluated the metabolism of numerous dinosaurs using a formula based on their body mass.
"We found that dinosaurs had growth and metabolic rates that were actually not characteristic of warm-blooded or even cold-blooded organisms," said evolutionary biologist Brian Enquist from University of Arizona.
"Instead, they had growth rates and metabolisms intermediate to warm-blooded and cold-blooded organisms of today," he added.
The researchers called creatures with this medium-powered metabolism "mesotherms".
The study assessed 21 species of dinosaurs as well as a range of mammals, birds, bony fish, sharks, lizards, snakes and crocodiles.
"In short, they had physiologies that are not common in today`s world," said Enquist.
Modern animals such as this leatherback turtle have a similar "in between" metabolism.
The study was published in the journal Science.
More from India
More from World
More from Sports
More from Entertaiment
- India successfully test fires futuristic Scramjet Rocket Engine
- Modi govt plans Rs 2,000 crore package for refugees from PoK
- Watch: Baloch, Sindhi leaders hold joint protest against CPEC in London
- India in Olympics: PM Modi forms task force to improve Indian sports
- Watch: President confers Khel Ratna to PV Sindhu, Sakshi, Dipa and Jitu Rai
- Germany's top immigration officer anticipates 300,000 refugees in 2016
- Wow! Soon you may find a robot greeting you at HDFC Bank
- Half of states expected to ratify GST by early September
- When Kareena Kapoor Khan got 'emotional' while walking Lakme Fashion Week runway
- Two dead, 41 hurt in bus crash involving Louisiana flood-relief volunteers