HOME >> BIOLOGY >> NEWS
Anthropologists find 4.5 million-year-old hominid fossils in Ethiopia

BLOOMINGTON, Ind. -- Scientists from Indiana University Bloomington and seven other institutions have unearthed skeletal fossils of a human ancestor believed to have lived about 4.5 million years ago. The fossils, described in this week's Nature (Jan. 20), will help scientists piece together the mysterious transformation of primitive chimp-like hominids into more human forms.

The fossils were retrieved from the Gona Study Area in northern Ethiopia, only one of two sites to yield fossil remains of Ardipithecus ramidus.

"A few windows are now opening in Africa to glance into the fossil evidence on the earliest hominids," said IUB paleoanthropologist Sileshi Semaw, who led the research.

Semaw and colleagues also report new evidence that suggests the human ancestors lived in close quarters with a menagerie of antelope, rhinos, monkeys, giraffes and hippos in a northern Ethiopia that was far wetter than it is today. The environmental reconstructions suggest a mosaic of habitats, from woodlands to grasslands. Research is continuing at Gona to determine which habitats A. ramidus preferred.

"We now have more than 30 fossils from at least nine individuals dated between 4.3 and 4.5 million years old," said Semaw, Gona Palaeoanthropological Research Project director and Stone Age Institute research scientist. The Stone Age Institute, a new research center dedicated to the study of early human evolution and culture, is affiliated with Indiana University's CRAFT, the Center for Research into the Anthropological Foundations of Technology.

In their letter to Nature, Semaw and his coauthors describe parts of one upper and two lower jaw bones -- with teeth still intact -- several loose teeth, part of a toe bone and intact finger bones. The scientists believe the fossils belong to nine individuals of the species A. ramidus. The scientists used argon isotope dating of volcanic materials found in the vicinity of the fossils to estimate their
'"/>

Contact: David Bricker
brickerd@indiana.edu
812-856-9035
Indiana University
19-Jan-2005


Page: 1 2

Related biology news :

1. A thesis of the UGR analyses more than 20-million-year-old vegetation to study climatic evolution
2. Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex
3. Phoenix rising: Scientists resuscitate a 5 million-year-old retrovirus
4. Birth rate, competition are major players in hominid extinctions
5. Varied diet of early hominid casts doubt on extinction theory, says Colorado U study
6. Compelling evidence demonstrates that Hobbit fossil does not represent a new species of hominid
7. New hominid species may be early version of Homo sapiens
8. Scientists scuttle claims that Hobbit fossil from Flores, Indonesia, is a new hominid
9. Agonized death throes probable cause of open-mouthed, head-back pose of many dino fossils
10. An ancient bathtub ring of mammoth fossils
11. Microfossils unravel climate history of tropical Africa

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:11/27/2019)... ... November 27, 2019 , ... ... device, equipped with surface electromyography (sEMG) sensors that measure and display muscle activity ... the specific muscles being targeted for treatment. Both patient and therapist can see ...
(Date:11/19/2019)... ... November 19, 2019 , ... The inaugural Cell & Gene Therapy ... York City. The one-day event will be chaired by Dr Aiman Shalabi, VP R&D, ... space. , “We are witnessing significant innovation in cell and gene therapies, and ...
(Date:11/12/2019)... ... November 12, 2019 , ... ... the design and manufacturer of technical ergonomic seating solutions, announced this week ... with Healthier Hospital Initiative guidelines. Established by Practice Greenhealth, a health care ...
Breaking Biology News(10 mins):
(Date:10/29/2019)... ... 29, 2019 , ... Researchers at Sony recently demonstrated biometric ... imagers , researchers identified people by the image of a small patch on ... recognition, fingerprints and vasculature. , The new CMS4 series of cameras offer ...
(Date:10/22/2019)... ... 2019 , ... nQ Medical, Inc. of Cambridge, MA, was recognized in the ... was announced at a showcase event yesterday in Los Angeles. nQ competed against 3,500 ... and impressive near-term growth projections to be named one of the most fundable companies ...
(Date:10/22/2019)... ... 22, 2019 , ... Enplug , a leading cloud-based ... into its digital signage platform. The collaboration brings one of the most trusted ... to leverage their existing digital signage networks to quickly disseminate critical safety information ...
(Date:10/17/2019)... ... October 15, 2019 , ... TopConsumerReviews.com recently gave ... DNA Testing for health and/or genealogy research purposes. , There are many reasons ... people want to know more about themselves at a cellular level: family history, ...
Breaking Biology Technology:
Cached News: