early human climbed trees made tools too
Last Updated : GMT 22:55:31
Arab Today, arab today
Arab Today, arab today

Unprecedented mix of ape and modern man

Early human climbed trees, made tools too

Arab Today, arab today

Arab Today, arab today Early human climbed trees, made tools too

Skeleton of Homo Naledi
Paris - Arab Today

Bones from the feet and hands of an extinct species of early man reveal a versatile ancestor who climbed trees, walked upright, and made tools, two studies showed on Tuesday.

Homo naledi, whose existence was revealed last month with the discovery of some 1,500 bones in a deep South African cave, upends the notion that the evolutionary path to modern man was a straight line, the researchers say.

Among the primitive human species grouped under the hominin umbrella -- including Homo erectus and Homo habilis  -- it revealed an unprecedented mix of ape and modern man.

A small brain and short stature, along with curved fingers and toes, pointed to its ape origins.

But tool-wielding hands and feet made for walking were closer to Homo sapiens, or modern man, than many of the other upright species that emerged some two to three million years ago.

Researchers have not determined the age of the H. naledi bones yet, so we do not know exactly where it fits into the increasingly complex timeline of early man.

"But regardless of age, this species is going to cause a paradigm shift in the way we think about human evolution," both in terms of behaviour and anatomy, says William Harcourt-Smith, lead author of the study focusing on the foot.

An analysis of the nearly-complete right foot -- 107 foot bones in all -- showed that H. naledi was well adapted for standing and walking long distances, found the study which was published in Nature Communications.

 - 'Strange combinations' -

"The foot was more advanced" -- that is to say more evolved -- "than other parts of its body: for instance, its shoulders, skull or pelvis," Harcourt-Smith said in a statement.

This combination probably resulted in "another type of bipedalism," or upright walking, which is slightly different from ours or any other species alive at same time.

"There were lots of different experiments happening within hominins -- it wasn't just a linear route to how we walk today," he said.

In the other study, also published in Nature Communications, a team led by researcher Tracy Kivell at Britain's University of Kent examined an equally complete set of bones from the right hand of another H. naledi individual from the same cave.

As with the foot, they found a mix of features that had never been seen in any other hominin species, some of them primitive and others modern.

The wrist and thumb showed clear evidence of "committed, habitual use of tools," the study concluded.

At the same time, slender and elongated fingers meant that their owner was used to swinging from branches.  

Scientists disagree on whether the physical traits early man shared with tree-dwelling apes were vestiges of an earlier stage of evolution, or essential for the survival of newly-upright Homo species.

The study of H. naledi boosts the latter theory.  

"This one hand suggests that even after the hominin hand had become well-adapted for complex manipulation, some hominins were still spending large amounts of their time climbing trees," Kivell said.

But versatility was no guarantee of success.

H. naledi -- along with most other members of the Homo group -- hit an evolutionary dead end.

"If recent, more complete hominin fossil discoveries have taught us anything, it's that strange combinations of more derived human-like features and more primitive features... are likely the rule rather than the exception," Kivell said.

The fossils, discovered deep inside a barely accessible cave complex near Johannesburg, are the largest, most complete set of hominin remains ever found, and added a new branch to the human family tree.
Source: AFP

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*

early human climbed trees made tools too early human climbed trees made tools too

 



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*

early human climbed trees made tools too early human climbed trees made tools too

 



Arab Today, arab today
Arab Today, arab today Jordanian woman reveals her project

GMT 00:46 2017 Saturday ,11 November

Jordanian woman reveals her project
Arab Today, arab today Japanese regulators raid Airbnb

GMT 00:44 2017 Monday ,20 November

Japanese regulators raid Airbnb
Arab Today, arab today Keep kids busy at Thanksgiving gatherings

GMT 11:14 2017 Friday ,10 November

Keep kids busy at Thanksgiving gatherings
Arab Today, arab today Saudi, Bahrain target Iran

GMT 00:48 2017 Monday ,20 November

Saudi, Bahrain target Iran
Arab Today, arab today Europe turns on Facebook, Google

GMT 02:26 2017 Monday ,20 November

Europe turns on Facebook, Google
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Australian academic's book pulled

GMT 15:20 2017 Monday ,13 November

Australian academic's book pulled
Arab Today, arab today May under Brexit pressure at EU reform summit

GMT 02:14 2017 Saturday ,18 November

May under Brexit pressure at EU reform summit
Arab Today, arab today Delhi half-marathon to go ahead

GMT 03:51 2017 Saturday ,18 November

Delhi half-marathon to go ahead
Arab Today, arab today The history of solar eclipses

GMT 05:16 2017 Sunday ,20 August

The history of solar eclipses
Arab Today, arab today Driverless, electric future just round

GMT 02:45 2017 Monday ,20 November

Driverless, electric future just round
Arab Today, arab today Tesla unveils its all-electric semi truck

GMT 02:59 2017 Saturday ,18 November

Tesla unveils its all-electric semi truck
Arab Today, arab today Mona Abdel Ghany increased artistic activities

GMT 12:15 2017 Friday ,17 November

Mona Abdel Ghany increased artistic activities
Arab Today, arab today paObama climate envoy slams Trump's rejection

GMT 16:04 2017 Friday ,17 November

paObama climate envoy slams Trump's rejection

GMT 12:22 2017 Thursday ,16 November

Hanan Metawe denies apology for “Major Treason”

GMT 11:15 2017 Thursday ,16 November

Angola oil boss sacked by father's protege

GMT 18:41 2017 Friday ,20 October

Designer Aql Faqih aspires to innovation

GMT 11:38 2017 Wednesday ,15 November

Unloved vultures fight for their survival

GMT 11:49 2017 Thursday ,17 August

Egyptian artist presents new collection of designs

GMT 02:28 2017 Saturday ,18 November

Anti-drug operation nets 4 tonnes

GMT 01:34 2017 Friday ,17 November

Banyan Tree Phuket Takes Festive Season

GMT 17:12 2017 Monday ,07 August

Al-Shawaifi reveals secrets of total solar eclipse

GMT 16:53 2017 Tuesday ,05 September

Youssra depended on colored foam
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