Thursday, August 9, 2007
t all seems so simple on the evolution diagrams we are used to seeing.
The ape gradually stops dragging its arms along the ground, becomes upright and evolves into modern man - the homo sapien.
But the analysis of two fossils from Kenya is throwing all that into question.
Research published in the journal Nature today has thrown up a serious challenge to the widely accepted view on human evolution.
An international team of researchers, including a geologist from the Australian National University (ANU), has found that two different species of early man lived side by side in the same place for almost half a million years.
Susan Anton is an associate professor of anthropology at New York University and co-author of the research.
"The co-existence of the two species suggests that they were more like sister species, as opposed to homo habilus being the mother to homo erectus," she said.
Assumptions in doubt
ANU geologist Ian MacDougall was part of the research team that travelled to the Koobi Fora Formation in Kenya.
He says the work throws up a whole host of questions.
"It would suggest that the two species lived in the same area but must have different ecological niches, as it were," he said.
"They weren't seriously competing, otherwise one would have expected the one species to completely dominate, and in fact wipe out a less adaptive species.
"It really does throw into doubt a whole series of assumptions that have previously been made on the basis of the fossils."
Mr McDougall is cautious about rushing to conclusions that history needs to be re-written.
"I don't think it throws into question the linear model from [homo] erectus to [homo] sapien," he said.
"But who knows what will turn up tomorrow?
"It makes it just a little more complicated, and that's been the story of the discussions on prominent evolution and particularly these early fossils found in Africa.
"The evolutionary tree is much more bushy than was thought even 10 years ago."
Colin Groves, professor of biological anthropology at the ANU, has long argued that the linear model of evolution is far too simple. He welcomes this new work.
"The general public seems to have the idea that evolution sort of progresses onward and upward," he said.
"But for a long time it's become clearer and clearer that - just like any other species - human evolution consists of divergent species coming off and new species arising.
"The idea of human evolution as a ladder, I think, is impossible to maintain anymore."
There is some disagreement about the implications of the study.
The researchers say it indicates that homo erectus and homo habilis both descended from another species.
Other scientists say it merely shows that an ancestral being can survive for a long time alongside its descendant.
The debate continues.
EUROPE'S FINEST TOPLESS HONEYS
"Intelligence is the capacity to receive, decode and transmit information efficiently. Stupidity is blockage of this process at any po...
Ava Fiore is a Playboy model and 2002 Golden Gloves champion boxer. She was arrested on Wednesday night on I 80 east in Kimball, Nebraska. P...
Wow Paulina still very perky at 44 ! Read about Paulas interesting childhood escaping the iron curtain THE NILES LESH PROJECT - ALL...
SHE IS A POTENTIAL F D I L F !!! Meghan McCain is a 23-year-old, socially liberal John Kerry voter who loves Superbad, Dita von Teese, Bud L...
Pat Venditte is a minor league pitcher with the Staten Island Yankees. He was selected in the 20th round of the 2008 draft with the 620th ov...
Donald Trump, a co-owner of “Miss USA”, “Miss Universe” and “Miss Teen USA” pageants, has come up with a new reality TV show which will take...
Missed it ? - The Archives !
- ► 2010 (80)
- ► 2009 (319)
- ► 2008 (1240)
- GWEN STEFANI - AWESOME STREET BIKINI SHOTS
- LEONA HELMSLEY'S LAST WILL & TESTAMENT
- LEGGY SUPER MODEL ELLE MACPHERSON
- BRITNEY SPEARS - "TOO SHORT" SHORTY DRESS
- BRITISH COMEDY "THE AGA SAG WOMEN"
- KARL ROVE GETS WRAPPED AT THE WHITEHOUSE
- HIPSTER OLYMPICS "LIVE" FROM WILLIAMSBURG BROOKLYN...
- JAMES BROWN SHOWS YOU HOW TO MOVE ! ! !
- 25 YEARS OF "TOP CELEBRITY SCANDALS" COUNTDOWN
- SEN LARRY CRAIG- "CLINTON IS A NAUGHTY BOY"
- AMY WINEHOUSE - CARIBBEAN BIKINI PICS
- MYTH BUSTERS - "BULL IN A CHINA SHOP" ???
- RON JEREMY - RAPS "FREAK OF THE WEEK"
- LINDSAY LOHAN - SEXY GERMAN ZOO PHOTOS
- COOL TIME LAPSE OF THE QUEEN MARY IN SANFRANCISCO ...
- 25 YEARS OF "TOP CELEBRITY SCANDALS" COUNTDOWN
- ALL BRAN - SUBLIMINAL MESSAGE ???
- RARE BLOOD RED MOON TONIGHT ! ! !
- EVE MENDEZ - STRATEGICALLY NAKED ! ! !
- SPECTACULAR HOT AIR BALLOON CRASH
- MARIAH CAREY - KINDA NUDE IN INTERVIEW MAGAZINE
- THE MICHAEL VICK STORY
- SLUTZ - BARBIE'S NEW COMPETITION ???
- MISS TEEN SOUTH CAROLINA TRIES TO ANSWER A QUESTIO...
- KIM KARDASHIAN IS A "FULL FIGURE" GAL ! ! !
- MARY KATE OLSEN SELLING WEED FOR GOD ?
- PARIS HILTON - SEXY IN GERMAN GQ ! ! !
- NEW SKULL FOSSILS CHALLENGE THE THEORY OF MAN'S OR...
- LIVE YOUR NEXT LIFE BACKWARDS ! ! !
- BROOKE BURKE IS STILL VERY HOT
- SIGGRAPH 2007 - ANIMATION INNOVATION +
- LETTERMAN'S TOP 10 "MICHAEL VICK EXCUSES"
- CAROLINE DAMORE AT THE HILTON'S BEACH PARTY
- LOUIS JOHNSON - HOW TO THUMP THE BASS !
- THE STAND UP ECONOMIST ???
- THE AMAZING FROZEN SMOKE "AEROGEL"
- LUCY LIU - I SEE YOU !
- BRITNEY SPEARS - LOOKING GOOD IN "ALLURE" !
- TV ANCHOR HAS A BOUT OF IN APROPRIATE LAUGHTER
- GENIUS PURE GENIUS - LEGEND OF CNORRIS !
- JENNA JAMESON - BEACH BIKINI AND DOG !
- JUST WHEN YOU THOUGHT IT COULDN'T GET WORSE FOR MI...
- PHIL RIZZUTO, 89 - GONE TO THE GREAT YANKEE IN TH...
- THAILAND'S "BOMB SQUAD" IN ACTION !
- JAPANESE TV - WACKY SHAVING COMMERCIAL
- TRAILER - SPORE (STILL COMING SOON) !
- WHAT NOT TO DO IF YOU MISS THE FREEWAY EXIT !
- GET YOUR BOXING GLOVES- IT A RUSSIAN WEDDING !
- KIM KARDASHIAN IN " SUPER BOOTY "
- SUPERBAD R- RATED TRAILER ! ! !
- SUPERMODEL "RUNWAY WIPEOUT" MONTAGE
- GWYNETH PALTROW - THE GODDESS ?
- FHM'S SEXIEST VIDEO OF ALLTIME ( 2007 )
- ALLOW ME TO BREAK THE ICE - FREEZE !
- REDNECK GAMES - END IN ROWDY RUCKUS ! ! !
- MERV GRIFFIN TALK SHOW LEGEND , 82
- FOXNEWS - "ROMNEY GIRLS" vs "OBAMA GIRL"
- RON PAUL - THE REAL DEAL ! ! !
- THE AWESOME MUGSHOT COLLECTION # 1
- NEW SPACE HOTEL OPENING 2012 ???
- UFOs OVER HATI CAUGHT ON VIDEO ! ! !
- A DOG WITH TWO WET NOSES ! ! !
- EVOLUTION - "SOUTH PARK" STYLE ! ! !
- HOLLYWOODS MOST BANKABLE STARS $ $ $
- FOSSIL CASTS DOUBT ON THE ORIGIN OF MAN
- LOUIS CK - WHY LITTLE KIDS SUCK ???
- FREELOADERS GUIDE TO INTERNET DATING
- TWO GUYS WHO LICK WOMEN ON VIDEO ???
- MIENFOKS MYTH BUSTER "THE GAYNESS OF JEFF GARCIA"
- NEW "MICHAEL VICK" CHEW TOY FOR DOGS !
- BARRY BONDS HITS NUMBER 756*
- CHRISTINE AGUILERA SHOWS A LITTLE CLEAVAGE! ! !
- COOL NEW "LED FLASHLIGHT" WEAPON ! ! !
- Scientists reveal secret of levitation ! ! !
- OJ SIMPSON ON A LIVE CALL-IN SHOW ???
- WORST PLAYER EVER ON THE PRICE IS RIGHT
- EVER BEEN DRUNK AND TRY TO STAND UP ???
- PAM ANDERSON WINS MIENFOKS BIKINI TROPHY
- THE TRAP - TRICKY COMMERCIAL FOR TOYOTAS
- AWESOME OFFICE CHAIR JUMPING STUNTS ! ! !
- ORSEN WELLS BBC INTERVIEW 1974
- Sunshine helps in the fight against breast cancer
- CINDY CRAWFORD - STILL IN THE SUN AT 41
- TOM CRUISE MUST KILL HITLER ! ! !
- RACHEL RAY'S MONTAGE OF ORGASM FACES
- WHO'S CRAZIER -TED STEVENS vs ROBERT BYRD ?
- DITA VON TEESE - DISCIPLINES BUSH
- BHC - 9 "500 HORSEPOWER" CHOPPER ! ! !
- CHABERT LACEY IS HOT ! ! !
- KEVIN SMITH - PUNKS A GEEK LIVE ! ! !
- GEORGE CASTANZA AS KARL ROVE-MORT ???
- 200 YEAR OLD SUBMARINE ATTACKS QUEEN MARY ?
- BIKINI CARWASH GONE WRONG ! ! !
- RARE TIGER CUB TWINS
- WACKY NEWS BLOOPERS ! ! !
- LINDSAY LOHAN COMPARES HER CONTEMPORARIES
- WHY DO WE HAVE SEX ???
- TARA REID - ST TROPEZ & HOT AGAIN ???
- SCARLETT & JENNA WHAT MAY HAVE BEEN ???
- KELLY OSBOURNE - MAJOR MAKE OVER ???
- ▼ August (101)