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:12/22/2016)... Dec. 20, 2016  As part of its longstanding mission ... personal genetics company, recently released its latest children,s book, titled ... book focuses on the topics of inheritance and variation of ... (NGSS) taught in elementary school classrooms in the US. ... by illustrator Ariana Killoran , whose previous book with ...
(Date:12/19/2016)... TORONTO , 19 de diciembre de 2016  Mosaic Biomedicals ... el desarrollo acelerado de MSC-1, un anticuerpo humanizado que se espera ... en 2017, con múltiples sitios previstos a lo largo de Europa ... MSC-1 ... factor inhibidor de leucemia (LIF), una citoquina pleiotrópica que se sobreexpresa ...
(Date:12/15/2016)... Germany , December 15, 2016 ... announced an agreement with NuData Security, an award-winning ... partnership will enable clients to focus on good customer experience, ... protection regulation. ... In order to provide a one-stop fraud prevention suite, ...
Breaking Biology News(10 mins):
(Date:1/24/2017)... , Jan. 23, 2017   Instrument Business ... ( Minneapolis, MN ) the 2016 ... the most authoritative newsletter tracking developments in the ... "Bio-Techne consistently achieved outstanding technical, operational ... Samazan, Managing Editor of IBO. "In 2016, Bio-Techne ...
(Date:1/23/2017)... , Jan. 23, 2017  Spherix Incorporated (Nasdaq: ... committed to the fostering of technology and monetization of ... patent infringement lawsuits. Anthony Hayes , ... 2017, we will continue to communicate with shareholders about ... and our due diligence on other patent assets that ...
(Date:1/23/2017)... , ... January 23, 2017 , ... ... been appointed Vice President, Preclinical Safety and Senior Director, Safety Pharmacology. Dr. ... in India. , Dr. Thomas’ career as an academic and industry preclinical ...
(Date:1/21/2017)... ... January 20, 2017 , ... G&L Scientific Inc, ... industry ( http://www.gandlscientific.com ), has announced the opening of new offices in Cambridge, ... consultants and contractors. This is the latest step in G&L’s expansion of its ...
Breaking Biology Technology: