Navigation Links
New research shows dinosaurs may have been smaller than we thought
Date:6/25/2009

FAIRFAX, Va., June 24, 2009 For millions of years, dinosaurs have been considered the largest creatures ever to walk on land. While they still maintain this status, a new study suggests that some dinosaurs may actually have weighed as little as half as much as previously thought.

In the study, published this week in the Journal of Zoology, Geoffrey Birchard, associate professor of environmental science and policy at George Mason University, was part of a team which uncovered a problem with the statistical model used by some scientists in the dinosaur community to estimate the mass of dinosaurs.

"The original equation used by scientists produces fairly accurate results when determining the mass of smaller animals, but when used on larger animals our research shows that many errors have occurred," says Birchard. "The new equation shows that dinosaurs are much smaller than we thought, but there is no mistaking that they were indeed huge animals."

Developed in 1985, the results of the original equation have been used by scientists to estimate or evaluate a variety of parameters, including brain size and egg size. The problem occurs as a result of transforming the data, which changes the properties of the original data, and creates biases that can affect the predictive results obtained from the equation.

Birchard and his colleagues realized there was an error when they used the equation to determine the weight of living animals such as a hippopotamus and an elephant and discovered that the equation greatly overestimated the weight of these animals.

The researchers developed a new equation for calculating dinosaur mass based on bone dimensions. This equation doesn't require the transformation of data that the original equation uses.

"The best way to understand the new equation is to think about a building that is built on pillars," says Birchard. "The bigger the building, the larger the pillars must be
'/>"/>

Contact: Catherine Ferraro
cferraro@gmu.edu
703-993-8813
George Mason University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Research shows skeleton to be endocrine organ
2. Newly created cancer stem cells could aid breast cancer research
3. Dominant cholesterol-metabolism ideas challenged by new research
4. Researchers identify proteins involved in new neurodegenerative syndrome
5. Texas researchers and educators head for Antarctica
6. MGH researchers describe new way to identify, evolve novel enzymes
7. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
8. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
9. U of MN researchers discover noninvasive diagnostic tool for brain diseases
10. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
11. Story ideas from the Journal of Lipid Research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... new report from the Wildlife Conservation Society shows ... help economically valuable species such as lobster, conch, ... help re-colonize nearby reef areas. , The reporttitled ... systematic review of research literature from no-take areas ... Dr. Craig Dahlgren, a recognized expert in marine ...
(Date:7/11/2014)... were many fires burning in eastern New South Wales, ... 11. , At 03:35 UTC on July 11 (12:35 ... Aqua passed over eastern New South Wales (NSW), the ... visible image of the region and spotted smoke (light ... MODIS,s thermal bands, are outlined in red. , The ...
(Date:7/11/2014)... and Mineral Research awarded Michael F. Holick, PhD, MD, ... 2014 Louis V. Avioli Award. Holick, a professor of ... for revolutionizing the understanding of vitamin D and its ... a member of the American Society for Bone and ... mineral basic research. It is named for ASBMR,s first ...
Breaking Biology News(10 mins):Belize's lobster, conch, and fish populations rebuild in no-take zones 2BUSM's Michael F. Holick receives American Society for Bone and Mineral Research award 2
... from the Buck Institute for Age Research offers a ... neurodegenerative disorder which afflicts 24 million people worldwide. ... a protein implicated in AD, scientists in California and ... a new therapeutic target for the disease. The finding ...
... fish do it. But Prof. Yossi Loya from Tel Aviv ... to discover that Japanese sea corals engage in "sex switching" ... survival of fragile sea corals ― essential to all life ... In times of stress like extreme hot spells, the ...
... group of scientists is renewing calls for policymakers to ... eutrophication or nutrient pollution problems in fresh ... Science , the researchers argue that dual-nutrient reduction ... complex interactions between nitrogen and phosphorus in fresh and ...
Cached Biology News:A revolutionary new model for Alzheimer's disease 2Changing sexes on the sea floor 2
(Date:7/10/2014)... Ouagadougou, Burkina Faso (PRWEB) July 10, 2014 ... Burkina Faso, today have access to an additional ... to increase access to contraception at all levels ... combining a lower-dose formulation of a widely used ... injection system. , Burkina Faso is the first ...
(Date:7/10/2014)... Understanding the need for better quality and ... gap that currently exists in this area, ChanTest has ... of validated ion channel and GPCR cell lines. ... ion channels control many critical physiological functions throughout the ... potential to treat a variety of human diseases. ...
(Date:7/10/2014)... (PRWEB) July 10, 2014 Robert Harman, DVM, ... Medicine company, is proud to announce the relaunch of his ... with a new series called “ What are Stem Cells ... an honest and straightforward foundation in the basics of stem ... decision on the right type of treatment when considering regenerative ...
(Date:7/10/2014)... CA (PRWEB) July 10, 2014 Senior ... institutions and professional associations, addressed the challenges of “Reducing ... Medical Device Industries” through strategic sourcing. Describing the partnership ... with the Supply Chain Management Institute ( SCMI) ... event on June 24 at the Kroc Institute of ...
Breaking Biology Technology:Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 2Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 3Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4
... Nev., Sept. 30, 2011 Lifeline Biotechnologies, Inc. (Pink Sheets: ... efforts to reestablish DTC services. Jim Holmes, Lifeline,s ... services to the Company we have not been successful.  We ... The value of Lifeline is not reflected in ...
... , SALT LAKE CITY, Sept. 29, 2011 University of ... catalysts, which are substances that speed chemical reactions and are ... the new method, the chemists also made a discovery that ... discovery: the sizes and electronic properties of catalysts interact to ...
... BioSpace , the leading life sciences employment and ... marking the 14th edition. (Logo: http://photos.prnewswire.com/prnh/20040907/CLTU006LOGO) ... Each company,s brand is added to an electronic and ... as well as at industry events and career fairs. ...
Cached Biology Technology:Lifeline Biotechnologies and Depository Trust Company 2Building better catalysts 2Building better catalysts 3BioSpace Spotlights Southern California's Life Science Community 2
... Andrew J. Davison and ... • Contents include: information ... viruses, paramyxoviruses, influenza and ... covers analysis of viral ...
... U. Desselberger (1995) • This book ... together classical and molecular techniques currently ... infections and analysis of virus-specific antibodies ... are presented covering immunoassays, blotting and ...
...
... provide rapid and efficient removal of short ... salts from PCR products (Figure 1). The ... Binding Buffer options for fragments >100 bp ... in either single column or 96-well plate ...
Biology Products: