HOME >> BIOLOGY >> NEWS
Dinosaurs: New study counters age-old theory

Movies such as Jurassic Park and the acclaimed BBC television series Walking with Dinosaurs portray long-necked dinosaurs as raising their necks vertically to browse from the tops of trees.

And while most dinosaur palaeontologists also believe long-necked dinosaurs - collectively known as sauropods - behaved this way, a leading Adelaide University researcher has just published new data which suggests otherwise.

Dr Roger Seymour, from Adelaides Department of Environmental Biology, has co-authored a paper in the prestigious Proceedings of the Royal Society in London, which argues it was physically impossible for sauropods to behave in this way. The paper argues that due to the sauropods possible heart size and metabolic rates, the only way they could have functioned on land was with a horizontal neck.

Dr Seymour based his findings on his research of the factors which determine heart size in animals. He has spent the past 24 years collecting data on heart morphology and arterial blood pressure in reptiles, birds and mammals to determine how blood pressure influences the thickness of the heart wall. His research is directed at understanding the evolution of vertebrate cardiovascular systems.

His research shows that heart size in all animals depends on two factors: the vertical distance of the head above the heart, and whether the animal was cold- or warm-blooded. For example, the giraffe has exceptionally high blood pressure and an enlarged heart because it has to pump blood up its long neck. Birds and mammals also have relatively large hearts because they are warm-blooded, while cold-blooded reptiles have low metabolic rates, low blood pressures and smaller hearts.

"We have determined that the left ventricle in a warm-blooded Barosaurus, for instance, would have needed to weigh about 2000kg to pump the blood its brain needed," he
'"/>

Contact: Dr. Roger Seymour
roger.seymour@adelaide.edu.au
61-88-303-5596
Adelaide University
23-Oct-2000


Page: 1 2

Related biology news :

1. Student science contest participation influences study, career choices, alumni say
2. New study shows hope for treating inhalant abuse
3. International study findings link acne-like rash to effectiveness of new targeted cancer treatment
4. Cigarette smoke causes breaks in DNA and defects to a cells chromosomes, Pitt study finds
5. New study indicates arsenic could be suitable as first-line treatment in type of leukaemia
6. Phase II trials of second-generation antisense cancer drug planned following successful early study
7. Preclinical safety study shows adipose-derived stem cells improve heart function after heart attack
8. Indiana University, EPA to study airborne PCBs
9. K-State, other universities to study how climate affects plant evolution
10. USC study links historical increases in life span to lower childhood exposure to infection
11. Washington University in St. Louis leads group studying aging process

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Dinosaurs New study counters age old theory

(Date:12/17/2014)... 16, 2014 Valencell, a leader in performance ... technology to industry leaders such as Intel, Jabra, Atlas, ... biometric wearable products. These products will be showcased at ... Las Vegas . "Our partners ... and robust – with the clinical data to back ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the ... 2015-2019" report to their offering. ... is the adoption of multimodal biometric systems. Multimodal ... an individual for verification and identification purposes. This ...
(Date:12/10/2014)... 2014  Wake Forest Baptist Medical Center today announced plans ... of Medicine. Funding for this $50 million capital project ... be publicly launched next summer. The ... 60 series R.J. Reynolds Tobacco Company complex, adjacent to ... immediately with plans to be ready to welcome medical ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
(Date:12/15/2014)... Dec. 15, 2014  Ascendis Pharma A/S, a ... to address significant unmet medical needs, today announced ... 2 pediatric study to evaluate once-weekly TransCon Growth ... GHD.  This interim analysis consists of 25 patients, ... in the study, completing all six months of ...
(Date:12/13/2014)... (PRWEB) December 12, 2014 The ... million in 2013, and is expected to grow ... 2019. , Browse through the TOC of the ... industry trends and segments, with help of various ... The global DNA Microarray market consists of instrument, ...
(Date:12/13/2014)... 2014 QuickSTAT is making significant investments ... Chain capabilities, and is delighted to announce the opening ... serve Life Science clients in the region. , QuickSTAT ... warehouse, will provide 24/7 transportation and logistics services, as ... patient-clinical specimens, API, following IATA rules and EU GDP ...
(Date:12/13/2014)... ANTONIO , Dec. 12, 2014  Janssen Research ... data at the San Antonio Breast Cancer Symposium (SABCS) ... plus best supportive care (BSC) versus BSC when used ... receiving standard chemotherapy. This non-inferiority trial did not meet ... 15 percent or greater increase in the risk of ...
Breaking Biology Technology:Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4DNA Microarray Market Is Expected to Grow at a CAGR of 15.2% from 2014 to 2019 - A Report by MicroMarket Monitor 2DNA Microarray Market Is Expected to Grow at a CAGR of 15.2% from 2014 to 2019 - A Report by MicroMarket Monitor 3DNA Microarray Market Is Expected to Grow at a CAGR of 15.2% from 2014 to 2019 - A Report by MicroMarket Monitor 4Quick Opens Office in France to Serve Life Science Community In France and Neighboring French-Speaking Countries 2Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 2Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 3Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 4Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 5Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 6Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 7Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 8Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 9Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 10Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 11Data from the EPO-ANE-3010 Study Evaluating Epoetin Alfa Presented at San Antonio Breast Cancer Symposium 12
Cached News: