Navigation Links
New evidence for warm-blooded dinosaurs
Date:7/18/2013

University of Adelaide research has shown new evidence that dinosaurs were warm-blooded like birds and mammals, not cold-blooded like reptiles as commonly believed.

In a paper published in PLoS ONE, Professor Roger Seymour of the University's School of Earth and Environmental Sciences, argues that cold-blooded dinosaurs would not have had the required muscular power to prey on other animals and dominate over mammals as they did throughout the Mesozoic period.

"Much can be learned about dinosaurs from fossils but the question of whether dinosaurs were warm-blooded or cold-blooded is still hotly debated among scientists," says Professor Seymour.

"Some point out that a large saltwater crocodile can achieve a body temperature above 30C by basking in the sun, and it can maintain the high temperature overnight simply by being large and slow to change temperature.

"They say that large, cold-blooded dinosaurs could have done the same and enjoyed a warm body temperature without the need to generate the heat in their own cells through burning food energy like warm-blooded animals."

In his paper, Professor Seymour asks how much muscular power could be produced by a crocodile-like dinosaur compared to a mammal-like dinosaur of the same size.

Saltwater crocodiles reach over a tonne in weight and, being about 50% muscle, have a reputation for being extremely powerful animals.

But drawing from blood and muscle lactate measurements collected by his collaborators at Monash University, University of California and Wildlife Management International in the Northern Territory, Professor Seymour shows that a 200 kg crocodile can produce only about 14% of the muscular power of a mammal at peak exercise, and this fraction seems to decrease at larger body sizes.

"The results further show that cold-blooded crocodiles lack not only the absolute power for exercise, but also the endurance, that are evident in
'/>"/>

Contact: Roger Seymour
roger.seymour@adelaide.edu.au
61-883-135-596
University of Adelaide
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evidence suggests Antarctic crabs could be native
2. ACRG and BGI report new evidence for the genetic bases of liver cancer
3. First international collaboration to showcase latest body of evidence of dairy health benefits
4. First evidence that the genome can adapt to temperature changes
5. Evidence of host adaptation of avian-origin influenza A virus
6. New evidence on how fluoride fights tooth decay
7. AACR news: Studies show increasing evidence that androgen drives breast cancer
8. New evidence dinosaurs were strong swimmers
9. New evidence shows PubMed Central undermines journal usage
10. New evidence that comets could have seeded life on Earth
11. Increasing evidence links high glycemic index foods and dairy products to acne
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... POINT ROBERTS, Washington , January 20, 2015 ... sectors including technology and tech stocks, releases video from the ... pickpocket and security consultant Apollo Robbins . ... about the Wocket™ biometric smart wallet, a product of NXT-ID, ...
(Date:1/22/2015)... CHARLOTTE, N.C. , Jan. 22, 2015 Infinisource has ... introduction of the G2 model. The G2 sets a higher ... company,s iSolved human capital management solution. With plug-and-play installation, touch ... G2 time clock provides a robust time collection solution for ...
(Date:12/19/2014)... , Dec. 18, 2014 Research and Markets ... "iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & ... http://photos.prnewswire.com/prnh/20130307/600769 ... introduced the fingerprint reading feature with the iPhone 5S. ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
... molecular fingerprints of what your cells are up to and ... cancer. You,ve likely heard about metabolites; your physician probably ... at your annual physical. Scientists suspect we have about 3,000 ... different compounds in our bodies. Dr. Sreekumar, ...
... 2009 A review by researchers at Northwestern University ... of the utility of probiotics in the treatment of ... 35624 was the only probiotic strain out of ... improve symptoms of IBS, including abdominal pain, bloating and ...
... at your desk and suddenly your heart is beating ... on fumes. It is a shocking, uncomfortable and frightening ... cause of sudden cardiac death or SCD, a condition ... States. Scientists are now closer to understanding what causes ...
Cached Biology News:Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment 2Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment 3Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment 4Review of probiotic trial research finds only Bifantis able to claim efficacy for IBS symptoms 2Ten genes identified in connection with sudden cardiac death 2
(Date:12/24/2014)... (PRWEB) December 23, 2014 “Preparative ... Gas, HPLC, Flash), Consumables (Columns, Solvents, Buffers, Valves, ... Food & Agriculture) - Forecasts to 2019” provides ... challenges, opportunities, current market trends, and strategies impacting ...
(Date:12/24/2014)... Earlier this year in a June 24 international ... Stem Cell Technology Center, LLC ( ASCTC ) focused attention ... adult tissue stem cells. His title “Asymmetric Self-Renewal by ... Future,” embodied the essence of his message to congress participants. ...
(Date:12/24/2014)... 2014 On Friday, December 19, 2014, ... and Continuing Resolution Appropriations Act of 2015, which for ... receive funding through the Congressionally Directed Medical Research Programs ... Hydrocephalus Association (HA), working in conjunction with its allies ...
(Date:12/24/2014)... 23, 2014 The report provides ... definition, classification, application and industry overview. This report ... cost structure. Production is separated by regions, technology ... materials, equipment, downstream client survey, marketing channels, industry ...
Breaking Biology Technology:Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2
... , LA JOLLA, Calif., Nov. 16 Fate ... a $30 million Series B financing led by OVP Venture ... a syndicate of corporate investors, including Astellas Venture Management, Genzyme ... co-leaders of the Company,s Series A financing, ARCH Venture Partners, ...
... Institute of Standards and Technology (NIST) have demonstrated ... run any program allowed by quantum mechanicsthe rules ... of information. The processor could be a module ... solve some important,problems that are intractable today. ...
... has received a 4.9 million funding boost from The ... used for invisibility ,cloaking, devices, sensitive security sensors that ... lenses that can be used to image tiny objects ... The new grant has been made to a team ...
Cached Biology Technology:Fate Therapeutics Closes $30 Million Series B Financing 2Fate Therapeutics Closes $30 Million Series B Financing 3Fate Therapeutics Closes $30 Million Series B Financing 4NIST demonstrates 'universal' programmable quantum processor 2NIST demonstrates 'universal' programmable quantum processor 3NIST demonstrates 'universal' programmable quantum processor 4£4.9 million to develop metamaterials for 'invisibility cloaks' and 'perfect lenses' 2£4.9 million to develop metamaterials for 'invisibility cloaks' and 'perfect lenses' 3
... HM-4000 Multidizer is designed with a variety ... rotating - all in one unit. Shake, ... independently operating compartments allow for hybridization and ... motion , The upper chamber uses ...
... Savant's latest SpeedVac Concentrator, the SPD series ... a new modern twist., The SPD121P SpeedVac ... gauge for optimizing runs; preventing samples from ... stopped at the end-users preset level., Standard ...
... to create the ideal environment for nucleic acid ... , Variable speed control (10 to 15 ... be for washing or hybridizing , A ... the chamber, ,is situated above a touch sensitive ...
... latest edition to the famous SpeedVac concentrator ... large diameter exhaust port for improved drying ... precise setting and control of all important ... quantities and samples , STANDARD TEFLON ...
Biology Products: