early man was not alone
Last Updated : GMT 03:09:26
Arab Today, arab today
Arab Today, arab today

Early Man was not alone

Arab Today, arab today

Arab Today, arab today Early Man was not alone

Paris - AFP

Modern man\'s forerunners shared the planet with at least two related species nearly two million years ago, scientists said on Wednesday, pointing to newly-unearthed pieces in a 40-year-old fossil puzzle. Findings published in the journal Nature touch on the odyssey of our ancestor, the upright-walking early human known as Homo erectus. H. erectus and a tool-making relative called Homo habilis were probably contemporaries of an even older species called Homo rudolfensis, the scientists contend. \"Human evolution (is) clearly not the straight line that it once was\" thought to be, study co-author Fred Spoor said in a teleconference. Spoor and a team dug up teeth, face and jaw fragments from sediment dated to the Pleistocene period at a location east of Lake Turkana in northern Kenya between 2007 and 2009. The prize culminated an agonising search for clues about a flat-faced, large-brained hominid whose skull had been found nearby in 1972. Known as KNM-ER 1470, or 1470 for short, the hominid had lived around two million years ago. But that was the only thing that was clear, for palaeontologists fought bitterly over its identity. Until 2007, such evidence remained elusive, for the skull lacked a lower jawbone, a vital piece of evidence. \"Then our luck magically changed, and within three years we found three fossils which we believe are attributable to the same species as 1470,\" said Meave Leakey, who had discovered 1470 with her husband Richard Leakey. Their daughter Louise was part of the team that found the new fossils. The new fragments of two individuals that resemble 1470 are between 1.78 million and 1.95 million years old and were found within a 10-kilometre (six-mile) radius of the 1470 site. \"One of the big problems with the skull 1470 was that, yes it is remarkably complete with the whole brain case there and a good part of the face, but it doesn\'t have teeth and it doesn\'t have a lower jaw with it,\" said Spoor. \"This (new) little skull had teeth and in fact the teeth are very well preserved.\" The new fossils were gently removed from sandstone using a dental drill before being scanned inside and out at a hospital in the Kenyan capital Nairobi. The scans were used in a virtual reconstruction of the entire lower jaw, which proved a good fit with the upper jaw of 1470. The result: a hominid that most likely is of an even older lineage of homo called H. rudolfensis. If so, it deals a blow to a rival theory that 1470 was a misshapen habilis. \"Statistically speaking, the chances that this is really a separate species have now greatly improved,\" said Spoor. The three species presumably stayed out of each other\'s way and ate different foods, the authors surmise. The find is \"significant, because they answer a key question in our evolutionary past -- how diverse was our genus close to the base of the human lineage?\" said Leakey. Other experts said the find showed that the six-million-year-old human family tree had complex roots, but cautioned about how they should be interpreted. For instance, some authorities contend that H. erectus evolved from H. habilis, while others insist the two were cousin or sister species. The fossils \"help to confirm the existence of a distinctive kind of early human nearly two million years ago,\" said Chris Stringer of London\'s Natural History Museum. \"Whether either of these two lineages (habilis and rudolfensis) was ancestral to Homo erectus, let alone to modern humans, remains uncertain,\" Bernard Wood of the Center for the Advanced Study of Hominid Paleobiology at George Washington University said in a commentary also carried by Nature.

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 man was not alone early man was not alone

 



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 man was not alone early man was not alone

 



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 PNG police start removing refugees

GMT 03:00 2017 Friday ,24 November

PNG police start removing refugees
Arab Today, arab today Sophian Yussef reveals suitable decoration

GMT 02:56 2017 Thursday ,23 November

Sophian Yussef reveals suitable decoration
Arab Today, arab today Syria congress to go ahead

GMT 02:24 2017 Friday ,24 November

Syria congress to go ahead
Arab Today, arab today IS media offline for a day

GMT 02:10 2017 Friday ,24 November

IS media offline for a day
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Human form of 'mad cow' disease

GMT 00:11 2017 Friday ,24 November

Human form of 'mad cow' disease
Arab Today, arab today British woman jailed in Iran to appear

GMT 03:19 2017 Friday ,24 November

British woman jailed in Iran to appear
Arab Today, arab today 'Trash islands' off Central America indicate

GMT 20:19 2017 Friday ,24 November

'Trash islands' off Central America indicate
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 Mitsubishi Materials units falsified product

GMT 03:24 2017 Friday ,24 November

Mitsubishi Materials units falsified product
Arab Today, arab today 'Robo-taxis' hold promise, and perils

GMT 08:07 2017 Thursday ,23 November

'Robo-taxis' hold promise, and perils
Arab Today, arab today Solaf happy for participating in “Hotline”

GMT 07:56 2017 Wednesday ,22 November

Solaf happy for participating in “Hotline”
Arab Today, arab today Delhi half-marathon to go ahead

GMT 03:51 2017 Saturday ,18 November

Delhi half-marathon to go ahead

GMT 08:03 2017 Tuesday ,21 November

Abeer Sabry reveals reason of “The Flood” success

GMT 08:03 2017 Thursday ,23 November

Srebrenica women cry tears of joy

GMT 18:41 2017 Friday ,20 October

Designer Aql Faqih aspires to innovation

GMT 16:04 2017 Friday ,17 November

paObama climate envoy slams Trump's rejection

GMT 17:52 2017 Sunday ,03 September

Etiquette expert underlines importance of gifts

GMT 09:12 2017 Thursday ,23 November

4 in 10 cancers due to modifiable risk

GMT 10:47 2017 Wednesday ,22 November

The Big Apple bike boom

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