Feathered feat: fossils of ancient bird with largest wingspan ever unearthed


  • English
  • Arabic

WASHINGTON // The wandering albatross, a magnificent seabird that navigates the ocean winds and can glide almost endlessly over the water, boasts the biggest wingspan of any bird alive today, extending almost 3.5 metres.

But it is a mere pigeon compared to an astonishing extinct bird called Pelagornis sandersi, identified by scientists on Monday from fossils unearthed in South Carolina, that lived 25 to 28 million years ago and boasted the largest-known avian wingspan in history, about 6.1 to 7.4 metres.

Size alone did not make it unique. It had a series of bony, toothlike projections from its long jaws that helped it scoop up fish and squid along the eastern coast of North America.

“Anyone with a beating heart would have been struck with awe,” said paleontologist Daniel Ksepka of the Bruce Museum in Greenwich, Connecticut, who led the study published in the Proceedings of the National Academy of Sciences. “This bird would have just blotted out the sun as it swooped overhead. Up close, it may have called to mind a dragon.”

With its short, stumpy legs, it may not have been graceful on land, but its long, slender wings made it a highly efficient glider able to remain airborne for long stretches despite its size.

It belonged to an extinct group called pelagornithids that thrived from about 55 million years ago to 3 million years ago. The last birds with teeth went extinct 65 million years ago in the same calamity that killed the dinosaurs.

But this group developed “pseudoteeth” to serve the same purpose. They lived on every continent including Antarctica. “The cause of their extinction, however, is still shrouded in mystery,” Mr Ksepka said.

“All modern birds lack teeth, but early birds such as Archaeopteryx had teeth inherited from their non-bird, dinosaurian ancestors. So in this case the pelagornithids did not evolve new true teeth, which are in sockets, but rather were constrained by prior evolution to develop toothlike projections of their jaw bones,” said Paul Olsen, a Columbia University paleontologist who did not take part in the study.

These birds lived very much like some of the pterosaurs, the extinct flying reptiles that lived alongside the dinosaurs that achieved the largest wingspans of any flying creatures, reaching about 11 metres.

Its fossils were found in 1983 when construction workers were building a new terminal at the Charleston International Airport. Its skull is nearly complete and in great condition, and scientists also have important wing and leg bones, the shoulder blade and wishbone.

Until now, the birds with the largest-known wingspans were the slightly smaller condor-like Argentavis magnificens, which lived about 6 million years ago in Argentina, and another pelagornithid, Pelagornis chilensis, that lived in Chile at about the same time.

At about 22-40 kg, Pelagornis sandersi was far from the heaviest bird in history, with numerous extinct flightless birds far more massive.

*Reuters

Blonde
%3Cp%3E%3Cstrong%3EDirector%3A%20%3C%2Fstrong%3EAndrew%20Dominik%3Cbr%3E%3Cstrong%3EStars%3A%20%3C%2Fstrong%3EAna%20de%20Armas%2C%20Adrien%20Brody%2C%20Bobby%20Cannavale%3Cbr%3E%3Cstrong%3ERating%3A%20%3C%2Fstrong%3E3%2F5%3Cbr%3E%3C%2Fp%3E%0A
Gulf Under 19s final

Dubai College A 50-12 Dubai College B

What can victims do?

Always use only regulated platforms

Stop all transactions and communication on suspicion

Save all evidence (screenshots, chat logs, transaction IDs)

Report to local authorities

Warn others to prevent further harm

Courtesy: Crystal Intelligence

UAE currency: the story behind the money in your pockets
Quick facts on cancer
  • Cancer is the second-leading cause of death worldwide, after cardiovascular diseases 
  •  About one in five men and one in six women will develop cancer in their lifetime 
  • By 2040, global cancer cases are on track to reach 30 million 
  • 70 per cent of cancer deaths occur in low and middle-income countries 
  • This rate is expected to increase to 75 per cent by 2030 
  • At least one third of common cancers are preventable 
  • Genetic mutations play a role in 5 per cent to 10 per cent of cancers 
  • Up to 3.7 million lives could be saved annually by implementing the right health
    strategies 
  • The total annual economic cost of cancer is $1.16 trillion

   

INFO

Visit www.wtatennis.com for more information

 

Specs

Engine: Duel electric motors
Power: 659hp
Torque: 1075Nm
On sale: Available for pre-order now
Price: On request

UAE currency: the story behind the money in your pockets

Armies of Sand

By Kenneth Pollack (Oxford University Press)
 

WE%20NO%20LONGER%20PREFER%20MOUNTAINS
%3Cp%3E%3Cstrong%3EDirector%3A%3C%2Fstrong%3E%20Inas%20Halabi%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStarring%3A%20%3C%2Fstrong%3ENijmeh%20Hamdan%2C%20Kamal%20Kayouf%2C%20Sheikh%20Najib%20Alou%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ERating%3A%3C%2Fstrong%3E%204%2F5%3C%2Fp%3E%0A
Top tips

Create and maintain a strong bond between yourself and your child, through sensitivity, responsiveness, touch, talk and play. “The bond you have with your kids is the blueprint for the relationships they will have later on in life,” says Dr Sarah Rasmi, a psychologist.
Set a good example. Practise what you preach, so if you want to raise kind children, they need to see you being kind and hear you explaining to them what kindness is. So, “narrate your behaviour”.
Praise the positive rather than focusing on the negative. Catch them when they’re being good and acknowledge it.
Show empathy towards your child’s needs as well as your own. Take care of yourself so that you can be calm, loving and respectful, rather than angry and frustrated.
Be open to communication, goal-setting and problem-solving, says Dr Thoraiya Kanafani. “It is important to recognise that there is a fine line between positive parenting and becoming parents who overanalyse their children and provide more emotional context than what is in the child’s emotional development to understand.”
 

Crazy Rich Asians

Director: Jon M Chu

Starring: Constance Wu, Henry Golding, Michelle Yeon, Gemma Chan

Four stars

The specs
  • Engine: 3.9-litre twin-turbo V8
  • Power: 640hp
  • Torque: 760nm
  • On sale: 2026
  • Price: Not announced yet
The specs

Engine: Four electric motors, one at each wheel

Power: 579hp

Torque: 859Nm

Transmission: Single-speed automatic

Price: From Dh825,900

On sale: Now

Zodi%20%26%20Tehu%3A%20Princes%20Of%20The%20Desert
%3Cp%3E%3Cstrong%3EDirector%3A%20%3C%2Fstrong%3EEric%20Barbier%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EStarring%3A%20%3C%2Fstrong%3EYoussef%20Hajdi%2C%20Nadia%20Benzakour%2C%20Yasser%20Drief%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ERating%3A%3C%2Fstrong%3E%204%2F5%3C%2Fp%3E%0A
Specs
Engine: Electric motor generating 54.2kWh (Cooper SE and Aceman SE), 64.6kW (Countryman All4 SE)
Power: 218hp (Cooper and Aceman), 313hp (Countryman)
Torque: 330Nm (Cooper and Aceman), 494Nm (Countryman)
On sale: Now
Price: From Dh158,000 (Cooper), Dh168,000 (Aceman), Dh190,000 (Countryman)

Factfile on Garbine Muguruza:

Name: Garbine Muguruza (ESP)

World ranking: 15 (will rise to 5 on Monday)

Date of birth: October 8, 1993

Place of birth: Caracas, Venezuela

Place of residence: Geneva, Switzerland

Height: 6ft (1.82m)

Career singles titles: 4

Grand Slam titles: 2 (French Open 2016, Wimbledon 2017)

Career prize money: $13,928,719

TEACHERS' PAY - WHAT YOU NEED TO KNOW

Pay varies significantly depending on the school, its rating and the curriculum. Here's a rough guide as of January 2021:

- top end schools tend to pay Dh16,000-17,000 a month - plus a monthly housing allowance of up to Dh6,000. These tend to be British curriculum schools rated 'outstanding' or 'very good', followed by American schools

- average salary across curriculums and skill levels is about Dh10,000, recruiters say

- it is becoming more common for schools to provide accommodation, sometimes in an apartment block with other teachers, rather than hand teachers a cash housing allowance

- some strong performing schools have cut back on salaries since the pandemic began, sometimes offering Dh16,000 including the housing allowance, which reflects the slump in rental costs, and sheer demand for jobs

- maths and science teachers are most in demand and some schools will pay up to Dh3,000 more than other teachers in recognition of their technical skills

- at the other end of the market, teachers in some Indian schools, where fees are lower and competition among applicants is intense, can be paid as low as Dh3,000 per month

- in Indian schools, it has also become common for teachers to share residential accommodation, living in a block with colleagues

Benefits of first-time home buyers' scheme
  • Priority access to new homes from participating developers
  • Discounts on sales price of off-plan units
  • Flexible payment plans from developers
  • Mortgages with better interest rates, faster approval times and reduced fees
  • DLD registration fee can be paid through banks or credit cards at zero interest rates