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Strong Tails of early Dinosaurs helped them move about on all fours and rise up on just their two back feet: Research

Bipedalism in dinosaurs was inherited from ancient and much smaller proto-dinosaurs.

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Skeleton of a dinosaur, pixabay

Toronto, March 4, 2017: Big muscles in the tails of early dinosaurs helped them move about on all fours and rise up on just their two back feet, new research suggests.

Bipedalism in dinosaurs was inherited from ancient and much smaller proto-dinosaurs.

The trick to this evolution is in their tails, said lead study author Scott Persons, postdoctoral fellow at University of Alberta in Canada.

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“The tails of proto-dinosaurs had big, leg-powering muscles,” Persons said.

“Having this muscle mass provided the strength and power required for early dinosaurs to stand on and move with their two back feet. We see a similar effect in many modern lizards that rise up and run bipedally,” Persons added.

Over time, proto-dinosaurs evolved to run faster and for longer distances.

Adaptations like hind limb elongation allowed ancient dinosaurs to run faster, while smaller forelimbs helped to reduce body weight and improve balance, according to the study published in the Journal of Theoretical Biology.

Eventually, some proto-dinosaurs gave up quadrupedal walking altogether.

The research also debunks theories that early proto-dinosaurs stood on two legs for the sole purpose of freeing their hands for use in catching prey.

“Those explanations don’t stand up,” Persons said.

“Many ancient bipedal dinosaurs were herbivores, and even early carnivorous dinosaurs evolved small forearms. Rather than using their hands to grapple with prey, it is more likely they seized their meals with their powerful jaws,” Persons explained.

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But, if it is true that bipedalism can evolve to help animals run fast, why aren’t mammals like horses and cheetahs bipedal?

“Largely because mammals don’t have those big tail-based leg muscles,” Persons said. (IANS)

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Scientists Unearth 160 Million Year Old Fossils of Winged Mammals From Jurassic Era in China

The City of Fossils has once again given the world insightful findings from the Jurassic Era.

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The specimens reveal that primitive mammals glided in air.
The newly excavated specimens reveal that at a time when magnanimous dinosaurs moved over the land, the winged mammals glided overhead in the sky (representative image) Pixabay.
  • Fossils of forerunners of present day mammals found in China
  • Proof unearthed that primitive mammals from the Jurassic Era essentially glided in the sky 
  • With the extent of fossils excavated from China, it is known as the ‘Country of Fossils’

China, August 10, 2017: There are a few things that can possibly leave a scientist, a history buff, and an excited 10-year-old child awestruck and the latest finding from China is certainly one of them! Two remarkable new species of delicate winged mammals were unveiled by paleontologists that are believed to have lived alongside dinosaurs nearly 160 million years ago.

The newly found fossils have been described in two papers published by a collective international team of scientists from the University of Chicago, and Beijing Museum of Natural History.

The specimens aren’t a first of a kind as previously mammalian gliders have been known to belong to the same time period. However, what sets them apart from all previous unearthing are the thin, furry membranes of skin attached to their fore and hind limbs that surprisingly are clearly preserved in the rock.

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Paleontologists understand the Mesozoic Era (time between roughly 248 million to 65 million years ago), as the Age of the Dinosaurs. It was popularly believed that primitive mammals from the period were tiny herbivorous and insectivorous, who stayed aloof in the shadows. However, in recent years, this belief was revised that mammals of the time had evolved to forms what were predicaments to their present-day form.

The understanding has now been changed again with the unearthing of these rare fossils that have revealed that at a time when huge dinosaurs ruled the land, the mammals glided far overhead – like flying squirrels.

This has been revealed by the new found specimens’ well preserved skeletal system and their carbonized skin.

“Despite living in dinosaur-dominated ecosystems, early mammals diversified into many ecological niches”, Zhe-Xi Luo, Paleontologist at the University of Chicago told VOA, who led the research published in the journal  Nature.

Named Maiopatagium furculiferum and Vilevolodon diplomyos, they were unearthed about 40 miles (65 km) away in Liaoning province and Hebei province respectively, and are now offering clues and scope for further studies about the evolution of mammals.

These two, along with another glider unearthed in 2006 are being touted as the leaders of the mammalian air-force that have since gone extinct.

Anatomy Of The Primitive Winged Mammals

Mammals are believed to have first appeared roughly 210 million years ago. However, these fossils have revealed that early mammals were not merely existing by cringing at the feet of the dinosaurs but instead, boasted a range of adaptations in anatomy, lifestyles and diet.

It has been revealed that both the fossils have extremely defined hand and feet, and the limbs of these gliding mammals are structurally different from those that simply walked on the ground or climbed trees. It was further notes that both the specimen has hands and feet similar to those in modern day bats (that appeared nearly 100 million years later).

The new found fossils also display very well-preserved teeth, which has helped in understanding the dietary habits of this ancient mammalian air force.

The teeth of Maiopatagium are simpler in terms of their construction and resemble those of fruit bats, suggesting that it ate soft plants and soft fruits. While on the other hand, Vilevolodon has a complex tooth crown with teeth resemble those of squirrels, suitable for eating seeds.

The primitive mammals could glide comes as a news to all.
The specimen can shed new light to understand about the anatomy, and lifestyle of the now extinct species. VOA

They both are gliders, however can be divided into segments of the same category based on their eating habits. The two specimens are different interns of their sizes also. Maiopatagium was about 9 inches (23 cm) long, similar in size to flying squirrels while Vilevolodon was a little smaller in comparison, more mouse-size.

After studying their hand and foot bones, the scientists concluded that the two must have used all four limbs to hang from trees, and grip tea branches with their feet like bats. They also display skeletal features in their forelimbs and shoulder joints that are believed to have given them the sustenance to glide.

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“The gliding membranes were attached to the four limbs, likely at or near the wrists and ankles,” said David Grossnickle, a University of Chicago paleontologist as reported by VOA.

These traits when combined compliment the hypothesis that different group of mammals followed a similar route to evolution –

  1. Land based, operating on all limbs
  2. Tree climbing, using elongated toes of the fore and hind limbs
  3. Gliding overhead the magnificent dinosaurs

The Jurassic Maiopatagium and Vilevolodon are believed to be the forerunners to modern mammals and show the earliest examples of gliding behavior among extinct mammal ancestors. They also share similar ecology with the present-day gliders, however with some significant differences.

ALSO READ: Scientists in Japan unearth 72-million-year-old Fossil of the largest complete Dinosaur Skeleton

These new unearthings are believed to have coexisted with other life varieties that were experimenting with flying such as small feathered dinosaurs like  Anchiornis who were on the evolutionary route to become birds some million years later.

Country Of Fossils

In recent years, an increasing number of fossils have been unearthed from different provinces of China. More recently, a Jurassic site was excavated in Yunyang county that is being understood as the biggest Jurassic fossil site in the world. The 150-metre long ‘Dinosaur fossil wall’ that is currently being excavated by a team of paleontologists is believed to be home to a new batch of fossils. Scientists have, in its entirety found that it was home to five different species of dinosaurs. These discoveries have together led to the country now being seen as the ‘Country of Fossils’. (VOA)


 
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Can Flourishing Islamic State (ISIS) be Stopped in Afghanistan?

The truth about IS and Afghanistan is definitely no picnic

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Taliban fighters react to a speech by their senior leader in the Shindand district of Herat province, Afghanistan, May 27, 2016.
Taliban fighters react to a speech by their senior leader in the Shindand district of Herat province, Afghanistan, May 27, 2016. The rise of IS in Afghanistan has become such a priority that U.S. and Afghan forces sometimes support the Taliban while battling IS, VOA
  • Depending on the location, the proliferation of IS has drawn varied resistance from the Afghan military, U.S. air support and ground troops, local militias, Taliban forces and other militant groups
  • Afghan army planes on Wednesday night accidentally air dropped vital supplies of food and water to IS militants in the Darzab district of northern Jouzjan province instead of to their own besieged troops
  • In the Tora Bora area, where IS has made a strong stand in recent days, local villagers and militias joined with Taliban to rout IS

June 25, 2017: The Islamic State group is rapidly expanding in parts of Afghanistan, advancing militarily into areas where it once had a weak presence and strengthening its forces in core regions, according to Afghan and U.S. officials.

Depending on the location, the proliferation of IS has drawn varied resistance from the Afghan military, U.S. air support and ground troops, local militias, Taliban forces and other militant groups.

Attacking IS has become such a priority in the country, that disparate forces sometimes join together in the ad-hoc fight, with Afghan and U.S. forces finding themselves inadvertently supporting the enemy Taliban in battling IS.

Confusion leads to mistakes

All too often, officials say, mistakes are made due to confusion on the ground.

Afghan army planes on Wednesday night accidentally air dropped vital supplies of food and water to IS militants in the Darzab district of northern Jouzjan province instead of to their own besieged troops, provincial police chief, Rahmatullah Turkistani told VOA. The supplies were meant to help Afghan forces that are countering twin attacks by IS and Taliban militants but were used instead by IS.

“It’s not getting better in Afghanistan in terms of IS,” U.S. Chief Pentagon Spokeswoman Dana White told VOA this week. “We have a problem, and we have to defeat them and we have to be focused on that problem.”

Reinforcements for the IS cause reportedly are streaming into isolated areas of the country from far and wide. There are reports of fighters from varied nationalities joining the ranks, including militants from Pakistan, India, Iran, Iraq, Syria, Russia and Central Asian neighbors.

Confusing scenarios

Still, the Islamic State-Khorasan (ISK) as IS is known in Afghanistan remains a fragmented group composed of differing regional forces with different agendas in different parts of the country.

“IS-K is still conducting low-level recruiting and distribution of propaganda in various provinces across Afghanistan, but it does not have the ability or authority to conduct multiple operations across the country,” a recent Pentagon report said. But where it operates, IS is inflicting chaos and casualties and causing confusing scenarios for disparate opponents.

In the Tora Bora area, where IS has made a strong stand in recent days, local villagers and militias joined with Taliban to rout IS. IS regained ground after a few days, leading to U.S. military air attacks on IS positions in conjunction with Afghan intelligence instructions and army operations.

IS fighters reportedly have fled from mountain caves of Tora Bora, where al-Qaida’s leader Osama bin Laden hid from U.S. attack in 2001.

Families displaced

IS fighters were also reportedly advancing in neighboring Khogyani district, displacing hundreds of families, according to district officials. It is one of several areas in Nangarhar province, near the Pakistani border, where IS has been active for over two years.

Fierce clashes in the Chaparhar district of Nangarhar last month left 21 Taliban fighters and seven IS militants dead, according to a provincial spokesman. At least three civilians who were caught in the crossfire were killed and five others wounded.

“IS has overpowered Taliban in some parts of Nangarhar because the Taliban dispatched its elite commando force called Sara Qeta (Red Brigade) to other parts of the country, including some northern provinces to contain the growing influence of IS there,” Wahid Muzhda, a Taliban expert in Kabul, told VOA.

ALSO READ: Flashback to Terror: 1993 Mumbai Blasts Judgement to Hail on June 27 After 24 Years

Recruiting unemployed youths

IS has also expanded in neighboring Kunar province, where, according to provincial police chief, it has a presence in at least eight districts and runs a training base, where foreign members of IS, train new recruits.

Hundreds of miles from Nangarhar, IS is attempting to establish a persistent presence in several northern provinces where it has found a fertile ground for attracting militants and recruiting unemployed youths, mostly between the age of 13 and 20.

IS has been able to draw its members from the Pakistani Taliban fighters, former Afghan Taliban, and other militants who “believe that associating with or pledging allegiance” to IS will further their interests, according to the Pentagon report.

Hundreds of militants have joined IS ranks in northern Jouzjan and Sar-e-Pul province where local militant commanders lead IS-affiliate groups in several districts.

Darzab district

Qari Hekmat, an ethnic Uzbek and former Taliban militant who joined IS a year ago, claims to have up to 500 members, including around 50 Uzbek nationals who are affiliated with the Islamic Movement of Uzbekistan (IMU) — previously associated with al-Qaida and Taliban in Afghanistan.

IS and Taliban are reportedly fighting over the control of Darzab district in Jouzjan which they stormed this week from two different directions and besieged scores of government forces. The Taliban has reportedly captured the center of the district while IS militants control the city outskirts.

Afghanistan faces a continuing threat from as many as 20 insurgent and terrorist networks present or operating in the Afghanistan-Pakistan region, including IS, the Pentagon said.

“In areas where the government has limited influence and control, IS attempts to emerge and expand there,” Ateequllah Amarkhail, an analysts and former Army general in Kabul told VOA.

Hit-and-hide strategy

IS has also claimed responsibility for several recent attacks in urban areas, however, with a hit-and-hide strategy that is proving effective. And it is engaging too in more skirmishes with U.S. forces that initially were sent to the country to help Afghan forces halt the spread of Taliban.

Three American service members based in eastern Afghanistan were killed in April during operations targeting IS militants, according to the Pentagon.

“ISIS-K remains a threat to Afghan and regional security, a threat to U.S. and coalition forces, and it retains the ability to conduct high-profile attacks in urban centers,” the Pentagon said. (VOA)

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India’s Textile and Fashion Heritage now part of Google project

Google's project 'We Wear Culture' is collaborating with 183 renowned cultural institutions from all around the world including India and its objective is to let people explore history of clothes dating as early as 3,000 years ago

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we wear culture
Google's new art project 'We wear Culture' digitizes fashion, Wikimedia
  • Google’s project ‘We Wear Culture’ is collaborating with 183 renowned cultural institutions from all around the world including India
  • It intends to trace the story and importance of Indian textiles from ancient sculptures
  • Its objective is to let people explore history of clothes dating as early as 3,000 years ago

June 15, 2017: To a certain extent, a culture is defined by what is worn by its people. In a country as diverse as India, vast and varied spectrum of cultures and clothes is one of the specialties. Google’s latest virtual exhibition project now provides us the opportunity to explore and know more about it.

Google’s project ‘We Wear Culture’ is collaborating with 183 renowned cultural institutions from all around the world including India and its objective is to let people explore history of clothes dating as early as 3,000 years ago, from the ancient Silk Road to the unmatched elegance of the Indian Saree,  from the courtly fashion of Versailles, to the Victorian ballgowns with intricate thread work.

According to Amit Sood, director of Google Arts and Culture,”We invite everyone to browse the exhibition on their phones or laptops and learn about the stories behind what you wear. You might be surprised to find out that your Saree, jeans or the black dress in your wardrobe have a centuries-old story. What you wear is true culture and more often than not a piece of art.”

Culture is defined by what is worn by its people. Click To Tweet

The company also mentioned that noteworthy collections from Chhatrapati Shivaji Maharaj Vastu Sangrahalaya (CSMVS) and varied weaves from across India, from Gharchola to Patola to Temple to Ikat sarees will be included in the online project, as it intends to trace the story and importance of Indian textiles from ancient sculptures.

ALSO READ: New Google Project Digitizes World’s Top Fashion Archives.

According to PTI reports, the world fashion exhibit also includes designs from north-eastern India including the weaves of tribes such as the Nagas, Meitis. it will showcase the traditional attire from Meghalaya called ‘Dhara’ or ‘Nara’ worn by the Khasi women as well.

As a part of the exhibit, Sewa Hansiba Museum has brought the unique colorful and rich embroidery arts, applique and mirror work from different communities such as the Ahir, Rabari, Chaudhury Patel and many others from the western part of India online.

The exhibition conducted by Salar Jung Museum brings to light the Sherwani and its journey of becoming the royal fashion statement of the Nizams from 19th century Hyderabad. Fashion and textiles enthusiasts can revisit Colonial Indian attires with Dr Bhau Daji Lad Mumbai City Museum. Over 400 online exhibitions and stories sharing a total of 50,000 photos, videos and other documents on world fashion are open to exploration as well.

The ‘We wear Culture’ initiative highlights significant events in the growth of the world fashion industry; the icons, the movements, the game changers and the trendsetters like Alexander McQueen, Christian Dior, Yves Saint Laurent, Gianni Versace, Audrey Hepburn and many more.

– prepared by Durba Mandal of NewsGram. Twitter: @dubumerang