Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

There were more small meat-eating dinosaurs than first thought

24.01.2013
"The Dinosaurs in the Details: There were more small meat-eating dinosaurs than first thought"
(Edmonton) University of Alberta researchers used fossilized teeth to identify at least 23 species of small meat-eating dinosaurs that roamed western Canada and the United States, 85 to 65 million years ago.

Until now, only seven species of small two-legged meat-eating dinosaurs from the North American west had been identified.

U of A palaeontologist Philip Currie and student Derek Larson examined a massive dataset of fossil teeth that included samples from members of the families to which Velociraptor and Troodon (possibly the brainiest dinosaur) belong.

"Small meat-eating dinosaur skeletons are exceedingly rare in many parts of the world and, if not for their teeth, would be almost completely unknown," said Larson.

The researchers say the huge increase in the number of small meat-eating species to 23, shows that instead of a few species existing for many millions of years, there were actually many small meat-eating species, each existing for shorter periods of time.

"We can identify what meat-eaters lived in what geographic area or geologic age," explained Currie. "And we can do this by identifying just their teeth, which are far more common than skeletons."

The research authored by Currie and Larson (now at the University of Toronto) was published Jan. 23 in the journal PLOS ONE.

Brian Murphy | EurekAlert!
Further information:
http://www.ualberta.ca

More articles from Earth Sciences:

nachricht Lab researcher discovers the green in Greenland
18.04.2014 | Lawrence Livermore National Laboratory

nachricht NASA's TRMM Satellite Adds Up Tropical Cyclone Ita's Australian Soaking
16.04.2014 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Siemens at the 2014 UIC ERTMS World Conference in Istanbul

01.04.2014 | Event News

AERA Meeting: German and US-American educational researchers in dialogue

28.03.2014 | Event News

WHS Regional Meeting: International experts address health challenges in Latin America

24.03.2014 | Event News

 
Latest News

A cross-section of the Universe

18.04.2014 | Physics and Astronomy

More, bigger wildfires burning western U.S., study shows

18.04.2014 | Studies and Analyses

High disease load reduces mortality of children

18.04.2014 | Social Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>