HOME >> BIOLOGY >> NEWS
Halfway human

Delson recreated the shape of SM3's skull using coordinates from some 200 points on its surface. He did the same for 23 other specimens-11 H. erectus, 10 modern H. sapiens, and 2 archaic H. sapiens. With this information, his computer program arranged the specimens according to their similarity, placing SM3 just about squarely between the erectus and modern humans-while even the archaic H. sapiens fell in among the erectus specimens.

Next, Delson told the computer that there were categories called "erectus", "sapiens" and "archaic", and asked it to find features that would force known members of each group closer together. Again the program lumped archaic H. sapiens in with the erectus specimens. And when Delson asked the computer to categorise the unknown SM3 it still ended up floating between the two main groups, though a bit closer to the erectus cluster. Delson therefore feels comfortable designating SM3 as an erectus, albeit a strange one. He suggests three possible explanations for her odd looks. She could have been an aberrant individual. She could be a member of a hitherto unknown population of Indonesian H. erectus with bulging foreheads. Or, he acknowledges, she could represent "a population evolving in the direction of modern humans". The last explanation is music to the ears of multiregionalists. "That is very daring for him to say," says Wolpoff. "If you thought Homo sapiens began in Africa, as I know [Delson] does, then something in Indonesia has no business evolving in that direction."

But SM3 doesn't even have to be the long-awaited missing link to be troublesome. The finding that she fits so poorly into existing species categories seems to highlight an ongoing problem in paleoanthropology. The experts still argue over what constitutes H. erectus, an enormous group that has been called "the muddle in the middle" because it spans more than a million years and includes many specimens, from Indonesia, Asia and Africa, that don't neces
'"/>

Contact: Claire Bowles
claire.bowles@rbi.co.uk
44-207-331-2751
New Scientist
10-Apr-2001


Page: 1 2 3 4 5 6 7 8

Related biology news :

1. Climate change plus human pressure caused large mammal extinctions in late Pleistocene
2. Lycopene slows human prostate tumour growth in mice and combined with vitamin E is even better
3. Most recent common ancestor of all living humans surprisingly recent
4. Wildlife Conservation Society hosts public symposium on human-wildlife diseases
5. Bronfenbrenner book sums up human development
6. No role for simian virus 40 in human pleural mesotheliomas
7. Sugar-coated sea urchin eggs could have sweet implications for human fertility
8. Serotonin metabolites in mollusks suggest pathways for human therapies
9. Wrapping a memory with an experience, capacity for recollection detected in non-human species
10. Viral suspect for amphibian decline traced to human spread through bait
11. Recent evolution at a single gene may have brought down heart disease risk in some human groups

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Halfway human

(Date:4/17/2014)... April 17, 2014The development of stem cell therapies to ... to characterize stem cell populations based on cell surface ... a new marker that is highly expressed in a ... blood, which they describe in an article in ... Ann Liebert, Inc., publishers. The article is available free ...
(Date:4/17/2014)... in about one per eight hundred births, Down syndrome ... genetic cause of intellectual disability. It results from a ... third copy of chromosome 21 (1% of the human ... team in the Department of Genetic Medicine and Development ... published in Nature , shed light on how ...
(Date:4/17/2014)... The White House honored Clemson professor Rajendra Singh ... efforts to promote and expand solar deployment in ... the D. Houser Banks Professor of Electrical and ... Silicon Nanoelectronics, is considered a local hero leading ... and economic opportunity in solar power and driving ...
Breaking Biology News(10 mins):Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3White House honors Clemson professor as 'Champion of Change' for solar deployment 2
(Date:1/15/2014)... NY (PRWEB) January 15, 2014 The Microcompetition ... a major disease. One of these latent viruses is the ... rheumatoid arthritis (RA). Rheumatoid arthritis (RA) is a chronic inflammatory ... theory, a study found that RA patients have high concentrations ...
(Date:1/15/2014)... 2013 was a banner year of continued innovation ... continued independent research led by the team at Wake ... million grant from the Susanne Marcus Collins Foundation, had ... reviewed journal, Amy Grant highlighted Brainwave Optimization® in First ...
(Date:1/15/2014)... Toronto, ON (PRWEB) January 15, 2014 ... an experimental new therapy for the treatment of tinnitus. ... unique tinnitus frequency, and over a period of weeks to ... Notched Sound Therapy in two forms: Notched Music and Notched ...
(Date:1/14/2014)... 14, 2014 Date: Friday, April 11, 2014 ... Country Club, 1360 Almshouse Road, Warrington, Pa. , ... solely dedicated to finding a cure for hepatitis B and ... host its annual Crystal Ball on Friday, April 11 at ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2
Cached News: