Sentences with phrase «to walk upright»

They can't walk upright, but they can release their tail at will.

Growth patterns of fossil teeth have shown that a prolonged growing - up period evolved long after our ancestors started walking upright and making tools.

Would they have arms and legs and walk upright as we do?

However, humans walk upright and have mouths that are high off the floor.

People have the capacity to exercise their muscles but tend to do so in certain ways — for example, to walk upright because that is easier and more efficient than crab - walking.

Imagine If I claimed to be a duck so walking upright and using tools were a duck like thing.

On June 28, 1957, Snoopy began walking upright on two legs and was given a larger snout and a longer body.

They also present evidence for similar differences between the sexes in Australopithecines (early relatives of humans), suggesting that women long ago evolved such scaffolding to compensate for walking upright while supporting their swelling wombs.

The discovery of a remarkably rare partial foot from an ancient primate suggests that more than one kind of human ancestor walked upright in Africa when Lucy's species, Australopithecus afarensis, was alive.

But as they moved out of the trees and began walking upright on the ground in the past 5 million years or so, the foot had to become more stable, and bit by bit, the big toe, which was no longer opposable, aligned itself with the other toes and our ancestors developed an arch to work as a shock absorber.

For more than a million years their australopithecine predecessors — Lucy and her kind, who walked upright like us yet still possessed the stubby legs, tree - climbing hands and small brains of their ape forebears — had thrived in and around the continent's forests and woodlands.

Found by paleoanthropologist Sileshi Semaw of Indiana University, all the fossils belong to Ardipithecus ramidus, who looked more like a chimpanzee than a human but did walk upright.

Now, a new study finds that this picture of awkward upright locomotion is wrong: Early members of the human family, or hominins, were already walking upright with an efficient, straight - legged gait some 4.4 million years ago.

He answered: «Man, who in infancy crawls on all fours, who walks upright on two feet in maturity, and in his old age supports himself with a stick.»

Human ancestors began walking upright at least 6 million years ago, according to analysis of hominid leg and pelvic bones.

We imagined our earliest ancestors in a backdrop of dry and grassy plains that basically forced the emergence of walking upright, tool use, and a larger brain, ultimately leading to language and culture and global success.

The footprints of interest to us were clearly distinguishable from those of the birds and the four legged animals, and proved there were animals walking upright on two legs nearly half a million years before Lucy.

Instead, our ancestors walked upright in the trees and then set foot on the ground, according to a study comparing the wrist bones of our closest relatives.

The results showed that even though this hominid's brain was no larger than a chimpanzee's, it most likely walked upright like modern humans.

The study helps settle a long - standing debate about how quickly our ancestors developed a humanlike gait, and shows that ancient hominins didn't have to sacrifice climbing agility to walk upright efficiently.

About 6 million years ago, our ancestors began to spend some of their time walking upright on the ground.

Found protruding out of the eroding sandstone at Burtele, in the central Afar region of Ethiopia just 45 kilometers north of Lucy's homeland, the bones provide hard evidence that two different hominins walked upright in two different ways 3.4 million years ago.

Just a reminder that hominids walking upright dates back around four million years.

Walking upright signalled the end of eating large amounts of cellulose, such as we see in gorillas and other apes with big bellies.

Greece's politicians are about the most selfish, vain, and short - sighted organisms to ever walk upright.

If Nino hadn't read that dissent that morning, we couldn't have walked upright out of the courtroom that day.

Barely walked upright around them.

Scientists have associated walking upright on all fours with a more energy efficient posture than sprawling.

Another possible link is a more ape - like creature that lived around 3 million to 4 million years ago: Australopithecus afarensis, which walked upright but stood only just over a metre tall and had a puny brain.

«That coincided with the pelvis narrowing, to allow walking upright, which limited the size of the infant at time of birth — all humans are born in a certain state of prematurity.

When chimps walk upright, they use an inefficient bent - legged gait, unlike the straight - legged stride of humans.

Likely human relatives predating, Ardi — Sahelanthropus tchadensis, Orrorin tugensis, and Ardipithecus kadabba — are known only from fragmentary remains; all probably walked upright.

A. ramidus apparently climbed trees but also walked upright some 4.4 million years ago — more than half a million years before the long - accepted origin of bipedalism.

By PAT SHIPMAN Ever since Plato described humans as «featherless bipeds», we have recognised walking upright on two legs as a defining characteristic of humankind.

From the shape of one nearly complete foot bone, the discoverers conclude that their specimen walked upright, a hallmark of all hominids.

According to the new research, the anatomy of the creature's pelvis and hind limbs shows that Poposaurus walked upright, planting its feet close to the midline of its body.

Although Lucy walked upright, she probably still slept in a tree nest at night or climbed trees to escape predators.

The new 1394 - square - meter hall (see artist's conception) at the museum will focus on major milestones over our 6 - million - year history — from when our ancestors first started walking upright through the development of language and symbols and beyond.

Taken together, the hand and foot suggest «you have a creature that would have walked upright really well but also would have been comfortable in the trees,» Harcourt - Smith says.

But as Samuel Johnson said of a dog walking upright, «It is not done well; but you are surprised to find it done at all.»

«Foot fossils of human relative illustrate evolutionary «messiness» of bipedal walking: Study of Homo naledi suggests that new species walked upright and also climbed trees.»

Modern humans dominate the planet partly because walking upright frees their hands for tool use, scientists have found.

Although sediment analyses date both finds to around the time of hominid origins, it's not known whether this creature regularly walked upright, a signature hominid behavior.

One reason is that ostriches trace their upright locomotion back 230 million years to the age of dinosaurs, while our ancestors walked upright just 5 million years ago.

Without more of the creature's skeleton — particularly a crucial leg or foot bone, or remains of kin — no one can be certain Toumaï walked upright.

This was surprising, as H. erectus walked upright, was about the same size as us and made simple tools — all traits associated with being human, says Dean.