Sentences with word «afarensis»

«This means that everything that has been written about variation, function and the anatomy of Australopithecus afarensis from fragmentary remains must now be in doubt.»

Paleoanthropologists have found the bones and teeth of hundreds of individuals of A. afarensis from between 3 million and 4 million years ago.

A controversy surrounding the three million year old fossil Australopithecus afarensis from its discovery nearly forty years ago is well on its way to being resolved.

When he compiled data that looked at multiple body parts from a wider selection of A. afarensis fossils, he concluded Lucy's lovers were 50 percent larger than she was.

The most famous specimen is Lucy, a 3.2 - million - year - old Australopithecus afarensis found in Ethiopia in 1974.

The remains of the new species, which has been dubbed Australopithecus deyiremeda and lived between 3.5 million and 3.3 million years ago, were uncovered just 35 kilometres from the Hadar site at which Lucy and other A. afarensis individuals were found.

Using super high - resolution CT scans, Kappelman originally planned to learn more about Lucy's movement and lifestyle — researchers have long debated how much time, if any, A. afarensis spent in trees.

Haile - Selassie says his team has found A. afarensis bones at the same site as their new species.

However the phalange (finger) bones which are visible from the side are curved like those of the Australopithecus afarensis skeleton Lucy, indicating they were probably used in climbing.

(The A. afarensis remains found at Dikika include a spectacularly well - preserved skeleton of a youngster, popularly dubbed «Lucy's baby.»)

But last summer a team of paleontologists led by Meave Leakey, a member of the famed fossil - hunting clan, announced that they'd found a new species of human ancestor that predates A. afarensis by about half a million years.

Since 1973, the fieldwork at Hadar has produced more than 370 fossil specimens of Australopithecus afarensis between 3.4 and 3.0 million years ago — one of the largest collections of a single fossil hominin species in Africa — as well as one of the earliest known fossils of Homo and abundant Oldowan stone tools (ca. 2.3 million).

«Lucy» — a female Australopithecus afarensis hominin estimated to have lived between 2.9 million and 3.8 million years ago — may have lived alongside another human ancestor in Ethiopia.

This puts afarensis in a special position to play a pivotal role in the story of what we are and where we come from.»

Upper - body evidence notwithstanding, he says, the anatomy of A. afarensis shows that its ability to climb trees was compromised.

Fossils from A. afarensis date to between 3.7 and 3 million years ago, so the two species would have overlapped (though Lucy herself may have lived too recently to see one).

The 3.2 - million - year - old skeleton was the most complete example of Australopithecus afarensis ever found.

In 2008, anthropologist John Kappelman and colleagues at the University of Texas at Austin scanned the partial skeleton of Lucy, the famous 3.18 million - year - old Australopithecus afarensis discovered in 1974.

«Lucy's baby», an Australopithecus afarensis girl who lived 3.3 million years ago, had a hyoid bulla; but by the time Homo heidelbergensis arrived on the scene 600,000 years ago, air sacs were a thing of the past.

The battle royal is best symbolized by world - famous Lucy, a 3.2 million - year - old fossil Australopithecus afarensis originally unearthed in 1974 and put forth as the original biped leading to us.

Was it 4 million years ago, when Australopithecus afarensis waddled through the mud in eastern Africa?

The body dimensions used in the model — 30 kg for females, 55 kg for males — were based on a group of early human ancestors, or hominins, such as Australopithicus afarensis, the species that includes the famous Ethiopian fossil «Lucy.»

It lived in what is now the central Afar region of the East African Rift Valley around 3.3 million years ago, only 35 kilometres north of known Australopithecus afarensis sites.

«If Haile - Selassie is right, I think it's only reasonable to conclude that some unknown number of Australopithecus afarensis skeletal remains actually belong to this new species instead,» says John Hawks at the University of Wisconsin - Madison.

You can go back more than 3 million years to Australopithecus afarensis [the famous «Lucy» species], which over time maintained the ability to walk on two legs and to climb in trees.

Now, researchers think they've solved the mystery of Lucy's footwork, thanks to an analysis of about 35 new individuals of A. afarensis uncovered at Hadar, Ethiopia, in the past 15 years.

Although Lucy lived around 3 million years ago, making her a contemporary of the earliest of the southern African gracile australopithecines, the A. afarensis group lived at least 4 million years ago.

«This discovery puts the spring back into afarensis's step,» says co-author Donald Johanson of the Institute of Human Origins at Arizona State University (ASU), Tempe.

Researchers have long wondered if other upright walking species shared the Rift Valley of Africa with Lucy, particularly after they discovered that several types of hominins were alive at the same time after A. afarensis disappeared 3 million years ago.

Most agree that Lucy's foot and mode of walking were already quite modern, thanks to a few 3.2 - million - year - old foot bones from A. afarensis adults, a 3.3 - million - year - old infant, and 3.7 - million - year - old footprints in Tanzania, thought to be made by the same species.

A full account of the paper, entitled «An early Australopithecus afarensis postcranium from Woranso - Mille ``, can be found on Cosmic Log.

None of these positions is incompatible with her being ancestral to humans, and most scientists still consider afarensis a good candidate as a human ancestor.

On November 24, 1974, fossils of one of the oldest known human ancestors, an Australopithecus afarensis specimen nicknamed «Lucy,» were discovered in Hadar, Ethiopia.

Over the years it has been generally assumed that A. afarensis gave rise to A. africanus and / or Homo habilis, which in turn evolved into H. erectus.

afarensis individual from Woranso - Mille (Haile - Selassie et al., 2010; Lovejoy et al., 2016), while the Hadar individuals range from 109 to 143 cm (McHenry, 1991; Ward et al., 2012)(Figure 12).

Now Selam is further illuminating whether A. afarensis spent all its time on the ground or, like an ape, still lived a partially arboreal life, as Wong describes, starting on page 78.

It might also settle an ongoing dispute about how to interpret a wide variation seen in A. afarensis bones, with some saying the differences are too great for it to have been just one species.

Several more bones from this species have been found in Ethiopia, including the famed «Lucy,» a nearly complete A. afarensis skeleton found in Hadar.

The well - known Australopithecus afarensis fossil we call Lucy, for example, lived a little over 3 million years ago in Ethiopia's Afar region, roughly 700 miles northeast of Lake Turkana.

Lucy is small compared with other specimens of Australopithecus afarensis found at the same site.

Until now, Little Foot was considered a more recent species than Lucy, the famous 3.2 - million - year - old Australopithecus afarensis from Ethiopia often cited as our direct ancestor.

The new stature estimate for one of the individuals greatly exceeds those previously reconstructed from fossilized skeletal material or footprint data for any A. afarensis individual, consistent with substantial body size variation and likely sexual dimorphism within a single species of sexually dimorphic australopithecines.

The most famous fossil to be discovered from the Australopithecus afarensis species is a 3.2 million year - old partial skeleton named Lucy, a female hominin discovered in Ethiopia in 1974.

How do Adam and Eve relate to what we have learned about the evolution of modern humans from Australopithecus afarensis and Homo habilis?

Blame Australopithecus afarensis..