Navigation Links
Study of polar dinosaur migration questions whether dinosaurs were truly the first great migrators
Date:10/21/2008

EdmontonContrary to popular belief, polar dinosaurs may not have traveled nearly as far as originally thought when making their bi-annual migration.

University of Alberta researchers Phil Bell and Eric Snively have suggested that while some dinosaurs may have migrated during the winter season, their range was significantly less than previously thought, which means their treks were shorter. Bell and Snively's findings were recently published in Alcheringa: An Australasian Journal of Paleontology.

The idea that these animals may have travelled distances nine times further than mule deer or four times those of wildebeest would have made them the greatest migrators in history. "There are strong opinions regarding dinosaur migration, but we decided to take a different approach, looking at variables such as energy requirements," said Bell. Their research led them to suggest that migrating dinosaurs could have travelled up to 3,000 kilometres in a round triplasting perhaps up to six monthshalf of the distance suggested previously.

According to Bell, the notion of migrating polar dinosaurs is not new; however, previously-held beliefs were that the animals followed the centrally shifting sunlight, or latitudinal "sun line," as part of their migration and would travel as far as 30 degrees of latitude, or 3,200 kilometres, in order to survive. Given their size and physiology, Bell and Snively have concluded that dinosaurs would have been incapable of sustaining the effort needed to make the trip. "When we looked at the energy requirements needed to support a three-tonne Edmontosaurus over this distance, we found it would have to be as energy efficient as a bird. No land animal travels that far today," said Bell.

Bell does not dispute the evidence of migration and points to discoveries of large bone beds as evidence that many dinosaurs also traveled. In order to sustain the herd, "it seemed to make sense that they would be moving to and from the poles," he said.

While this view of migration is feasible for some species of polar dinosaurs, it does not hold for all, Bell noted. "Many types of dinosaurs were surviving in polar latitudes at the time, and getting along quite fine," said Bell. "They were not physically able to remove themselves from the environment for a variety of reasons and had to adapt to the cold, dark winters just as the rest of us mammals do today."


'/>"/>

Contact: Jamie Hanlon
jamie.hanlon@ualberta.ca
780-492-9214
University of Alberta
Source:Eurekalert

Related biology news :

1. New CU-Boulder study shows diversity decreases chances of parasitic disease
2. UCSF Fresno leading-edge study lends hope to emphysema patients
3. Study sheds new light on dolphin coordination during predation
4. Current mass extinction spurs major study of which plants to save
5. Study: Wildlife need more complex travel plans
6. UGA study reveals ecosystem-level consequences of frog extinctions
7. Study links nicotine with breast cancer growth and spread
8. Study finds high mortality of endangered loggerhead sea turtles in Baja California
9. Landmark study unlocks stem cell, DNA secrets to speed therapies
10. Pregnancy not turning minds to mush: Study
11. New Systems Biology Awards enable detailed study of microbes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/31/2016)... March 31, 2016  Genomics firm Nabsys has completed ... Barrett Bready , M.D., who returned to the ... original technical leadership team, including Chief Technology Officer, ... Development, Steve Nurnberg and Vice President of Software and ... company. Dr. Bready served as CEO of ...
(Date:3/23/2016)... , March 23, 2016 ... Interesse erhöhter Sicherheit Gesichts- und Stimmerkennung mit ... Inc. (NASDAQ: MESG ), ein ... dass das Unternehmen mit SpeechPro zusammenarbeitet, um ... der Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, im ...
(Date:3/22/2016)... and SANDY, Utah , March ... operates the highest sample volume laboratory in ... and UNIConnect, leaders in clinical sequencing informatics and molecular ... of a project to establish the informatics infrastructure for ... NSO has been contracted by the Ontario Ministry ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... ... May 03, 2016 , ... Nashville Fertility ... laboratories. A contingency of reproductive endocrinologists, including Dr. George Hill at ... and to help them build families. , Ovation Fertility is a nationwide network ...
(Date:5/2/2016)... ... May 02, 2016 , ... F.E.E.D. Co., ... success of their revolutionary, veterinarian-designed product for indoor cats. The NoBowl Feeding System ... with their food the way nature intended. NoBowls make cats happy and healthy. ...
(Date:4/29/2016)... , April 29, 2016 ... Transparency Market Research "Separation Systems for Commercial Biotechnology ... Trends, and Forecast 2015 - 2023", the separation ... US$ 10,665.5 Mn in 2014 and is projected ... 2015 to 2023 to reach US$ 19,227.8 Mn ...
(Date:4/29/2016)... 2016 Elekta is pleased to ... its industry-leading treatment planning software, is available for clinical ... version 5.11 provides significant performance speed enhancements ... up to four times faster than in previous versions ... gold standard Monte Carlo algorithm, ...
Breaking Biology Technology: