Navigation Links
Found: First complete remains of early sauropod dinosaur
Date:10/28/2010

Boulder, CO, USA - Scientists have discovered in China the first complete skeleton of a pivotal ancestor of Earth's largest land animals the sauropod dinosaurs. The new species, tentatively dubbed Yizhousaurus sunae, lived on the flood plains around Lufeng in the Yunnan Province of South China about 200 million years ago. The species helps explain how the iconic four-footed, long-necked sauropod dinosaurs evolved.

Unlike the 120-foot-long, 100-ton sauropod giants that came later, Yizhousaurus was about 30 feet in length, but it shows all of the hallmarks of later sauropods: the beginning of a long neck, a robust skeleton and four-legged posture. It also comes with an intact fossilized skull which is very rare and crucial for understanding its place in the evolution of sauropods.

"Sauropods have these big bones but their skulls are very lightly constructed and also very small," said paleontologist Sankar Chatterjee of Texas Tech University. Chatterjee presents the discovery on Sunday, Oct. 31 at the annual meeting of the Geological Society of America in Denver.

Yizhousaurus's skull is broad, high and domed, less than a foot long with a short snout, eye sockets on the sides for scanning enemies. It has an unusually wide and U-shaped jaw, in top view, like that seen in later Camarasaurus, said Chatterjee. Numerous serrated and spoon-shaped teeth of the upper and lower jaws would shear and slide past each other for cutting plant material during feeding. The sturdy teeth and raised neck let the animal very easily nip small branches from treetops and then chew the plant material.

"Once the plant food was ingested, a gastric mill in the stomach probably provided further mechanical breakdown of the plant," Chatterjee explained. Apparently the animal was well adapted to a life of eating plants to support its large body.

Besides its telltale physical features, Yizhousaurus was also found in revealing company. A half century ago spectacular specimens of prosauropod dinosaurs such as Lufengosaurus were discovered at the same location. This makes sense, since most paleontologists are of the opinion that prosauropods gave rise to sauropods, despite the fact that the transition has been very vague, Chatterjee said.

"This is why this new one (Yizhousaurus), may bridge this gap," he said.


'/>"/>

Contact: Christa Stratton
cstratton@geosociety.org
Geological Society of America
Source:Eurekalert  

Related biology news :

1. Science never seen before is focus of first scientific conference on gigapixel imaging
2. Scientist Tim Flannery is first Austrailian to receive Joseph Leidy Award
3. Researchers develop first implanted device to treat balance disorder
4. Singapore scientists first to perform genome-wide study of human stem cells
5. Singapore hosts first Decade of the Mind conference in Asia
6. Image of mosquitos heart wins first place in Nikons Small World photomicrography competition
7. Team completes world-first ocean observatory
8. First babies born from genetic screening study
9. WUSTLs Living Learning Center shares the worlds first full Living Building certification
10. Scientists watch cell-shape process for first time
11. Progress toward first commercial repellent for East Coasts stinker
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Found: First complete remains of early sauropod dinosaur
(Date:3/15/2016)... , March 15, 2016 Yissum Research ... the technology-transfer company of the Hebrew University, announced today ... remote sensing technology of various human biological indicators. Neteera ... $2.0 million from private investors. ... on the detection of electromagnetic emissions from sweat ducts, ...
(Date:3/11/2016)... , March 11, 2016 ... new market research report "Image Recognition Market by Technology ... (Marketing and Advertising), by Deployment Type (On-Premises and Cloud), ... To 2022", published by MarketsandMarkets, the global market is ... to USD 29.98 Billion by 2020, at a CAGR ...
(Date:3/9/2016)... -- Nigeria . Recently, the ... public service employees either did not exist with their ...    --> Nigeria . Recently, ... 23,000 public service employees either did not exist with ... unlawfully.    --> DERMALOG, the biometrics innovation ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... Lady had been battling arthritis since ... ligament in her left knee. Lady’s owner Hannah sought the help of Dr Jeff ... surgeon, to repair her cruciate ligament and help with the pain of Lady’s arthritis. ...
(Date:5/24/2016)... ... May 24, 2016 , ... Cell therapies for a range ... by research at Worcester Polytechnic Institute (WPI) that yielded a newly patented method ... , The novel method, developed by WPI faculty members Raymond Page, PhD, professor ...
(Date:5/24/2016)... ... May 24, 2016 , ... Last week, Callan Capital, ... executives and entrepreneurs, held The Future of San Diego Life Science event at the ... life science community attended the event with speakers Dr. Rich Heyman, former CEO of ...
(Date:5/23/2016)... ... May 23, 2016 , ... The need for blood donations in South Texas and across the ... Texas Blood & Tissue Center, blood donations are on the decline. In fact, donations across ... down 21 percent in South Texas in the last four years alone. , There is ...
Breaking Biology Technology: