Arab Today, arab today theropods shrank for 50m years before becoming birds
Last Updated : GMT 22:49:43
Arab Today, arab today
Arab Today, arab today

Theropods shrank for 50m years before becoming birds

Arab Today, arab today

Arab Today, arab today Theropods shrank for 50m years before becoming birds

Theropods shrank
Sydney - UPI

A new study sheds more light on the evolutionary transition forged by theropods, the dinosaurs that eventually became birds.
A paper published this week suggests these dinosaurs shrank for 50 million years as they assumed their new identities as feathered creatures of the sky.
Researchers used a massive fossil database to plot and analyze over 1,500 anatomical traits and reconstruct a vast dino family tree. Their efforts showed theropods shrank in size 12 times over 50 million years leading up to the emergence of birds -- from giant meat-eater to smaller raptor and eventually to regal bird. Along the way, the dinosaurs not only became smaller but also got faster, and developed more pronounced feathers, as well as wishbones and wings.
"Birds evolved through a unique phase of sustained miniaturization in dinosaurs," explained Professor Michael Lee, researcher at both the University of Adelaide's School of Earth and Environmental Sciences and the South Australian Museum.
Lee is the lead author of the study, published in the journal Science.
"Being smaller and lighter in the land of giants, with rapidly evolving anatomical adaptations, provided these bird ancestors with new ecological opportunities, such as the ability to climb trees, glide and fly," Lee added. "Ultimately, this evolutionary flexibility helped birds survive the deadly meteorite impact which killed off all their dinosaurian cousins."
Ultimately, Lee says, theropods out-evolved other lineages of dinosaurs -- learning to climb, glide and forage trees for new food sources.
"This evolutionary flexibility helped birds survive the deadly meteorite impact which killed off all their dinosaurian cousins."

 

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today theropods shrank for 50m years before becoming birds Arab Today, arab today theropods shrank for 50m years before becoming birds

 



Arab Today, arab today

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today theropods shrank for 50m years before becoming birds Arab Today, arab today theropods shrank for 50m years before becoming birds

 



Arab Today, arab today France defies terrorism through tourism

GMT 15:18 2017 Saturday ,20 May

France defies terrorism through tourism
Arab Today, arab today How to do your own Ramadan corner?

GMT 15:53 2017 Saturday ,27 May

How to do your own Ramadan corner?
View News in Arabic - Culture: أخبار الثقافة والفنون
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday