Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Team Sheds Light on Ice Age Human Evolution in Asia

23.09.2011
In an article published in the October issue of the Journal of Human Evolution (http://www.uiowa.edu/~anthro/documents/1.5-million-Homo-erectus-jaw.pdf), the team announced the discovery of a 1.5 million-year-old upper jaw of the human ancestor Homo erectus. Found at Sangiran (Sang-GRR-awn) on Indonesia's Java Island, the jaw is the oldest reputably dated example of "Java Man," the Homo erectus type originally discovered in 1891.

The find came from Sangiran expeditions conducted from 1998 through 2008 and co-led by UI Professor Russell L. Ciochon (sha-HAWN) and ITB Professor Yahdi Zaim (zye-EEM). In 2001, UI Associate Professor of Geoscience E. Arthur Bettis III joined the team to study the stratigraphy, sedimentology and soils in order to reliably date the Sangiran site.

The upper jawbone (fossil maxilla) was discovered as the team studied the geology and dating of the Sangiran lower fossil beds. The new fossil is the first Java specimen found in beds under direct geological study, making its provenance incontrovertible. The UI-ITB team has published several peer-reviewed papers dating the Sangiran lower beds to 1.5 million years ago.

Ciochon notes that the new fossil teeth contained within the jawbone show similarities to Homo erectus teeth found in East Africa and Western Eurasia. They are less like those of China's "Peking Man" -- Homo erectus teeth found in Northeast Asia.

Ciochon said that East Asia's two Homo erectus groups (Java and China) may have had separate geographic origins.

"Our team's find at Sangiran is one of several recently discovered human fossils, such as the so-called 'Hobbit' -- an island-dwarfed species of early human -- of the Indonesian island of Flores, as well as the discovery of a unique ancient human DNA lineage at a site in Siberia called Denisova, that has put East Asia in the scientific spotlight," Ciochon said.

"We are now gaining a greater appreciation for the complexity of human evolution in the region, and our research at Sangiran provides yet another line of evidence in an ever-growing mass of data that will help shed light on this faintly illuminated region in our distant human past," he said.

Ciochon is a professor in the UI Department of Anthropology in the College of Liberal Arts and Sciences (CLAS). Other CLAS co-authors are Associate Professor Robert Franciscus and graduate students K. Lindsay Eaves and Hannah Marsh. ITB co-authors are Yan Rizal and Aswan. Other co-authors are Assistant Professor Joshua Polanski, Department of Anthropology, University of Arkansas (2010 CLAS Ph.D. graduate); Professor Frederick Grine, Departments of Anthropology and Anatomical Sciences, Stony Brook University, N.Y.; Roy Larick, Helios Laser, Cleveland, Ohio; and Matthew Heizler, New Mexico Bureau of Mines and Mineral Resources, Socorro, N.M.

The project was funded by the L.S.B. Leakey Foundation and the following UI sources: Center for Global and Regional Environmental Research; Central Investment Fund for Research Enhancement in the Office of the Vice-President for Research; Collaborative Interdisciplinary Projects Initiative in the Office of the Vice President for Research; Office of the Dean, CLAS; and the Human Evolution Research Fund at the University of Iowa Foundation.

STORY SOURCE: University of Iowa News Services, 300 Plaza Centre One, Suite 371, Iowa City, Iowa 52242-2500

MEDIA CONTACTS: Russell Ciochon, UI Department of Anthropology, russell-ciochon@uiowa.edu, 319-335-0522; Gary Galluzzo, UI News Services, 319-384-0009, gary-galluzzo@uiowa.edu

Russell Ciochon | Newswise Science News
Further information:
http://www.uiowa.edu

More articles from Earth Sciences:

nachricht Monitoring lava lake levels in Congo volcano
16.05.2018 | Seismological Society of America

nachricht Ice stream draining Greenland Ice Sheet sensitive to changes over past 45,000 years
14.05.2018 | Oregon State University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

Im Focus: Computer-Designed Customized Regenerative Heart Valves

Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.

Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...

Im Focus: Light-induced superconductivity under high pressure

A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.

Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

Supersonic waves may help electronics beat the heat

18.05.2018 | Power and Electrical Engineering

Keeping a Close Eye on Ice Loss

18.05.2018 | Information Technology

CrowdWater: An App for Flood Research

18.05.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>