Navigation Links
Duck-billed dinosaurs endured long, dark polar winters
Date:4/11/2012

Duck-billed dinosaurs that lived within Arctic latitudes approximately 70 million years ago likely endured long, dark polar winters instead of migrating to more southern latitudes, a recent study by researchers from the University of Cape Town, Museum of Nature and Science in Dallas and Temple University has found.

The researchers published their findings, "Hadrosaurs Were Perennial Polar Residents," in the April issue of the journal The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology. The study was funded through a grant from the National Science Foundation.

Anthony Fiorillo, a paleontologist at the Museum of Nature and Science, excavated Cretaceous Period fossils along Alaska's North Slope. Most of the bones belonged to Edmontosaurus, a duck-billed herbivore, but some others such as the horned dinosaur Pachyrhinosaurus were also found.

Fiorillo hypothesized that the microscopic structures of the dinosaurs' bones could show how they lived in polar regions. He enlisted the help of Allison Tumarkin-Deratzian, an assistant professor of earth and environmental science, who had both expertise and the facilities to create and analyze thin layers of the dinosaurs' bone microstructure.

Another researcher, Anusuya Chinsamy-Turan, a professor of zoology at the University of Cape Town, was independently pursuing the same analysis of Alaskan Edmontosaurus fossils. When the research groups discovered the similarities of their studies, they decided to collaborate and combine their data sets to provide a larger sampling. Half of the samples were tested and analyzed at Temple; the rest were done in South Africa.

"The bone microstructure of these dinosaurs is actually a record of how these animals were growing throughout their lives," said Tumarkin-Deratzian. "It is almost similar to looking at tree rings."

What the researchers found was bands of fast growth and slower gr
'/>"/>

Contact: Preston M. Moretz
pmoretz@temple.edu
215-204-4380
Temple University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. New duck-billed dinosaur gives scientists clues to evolution of head ornamentation and provinciality
2. Polysternon isonae, a new species of turtle that lived with dinosaurs in Isona
3. Dinosaurs with killer claws yield new theory about flight
4. Skin bones helped large dinosaurs survive, new study says
5. Paleontologist describes large nest of juvenile dinosaurs, first of their genus ever found
6. Tree resin captures evolution of feathers on dinosaurs and birds
7. New Montana State research sheds light on South Pole dinosaurs
8. Jurassic Park had it right: Some dinosaurs hunted by night
9. Living dinosaurs: The evolutionary history of modern birds
10. Test shows dinosaurs survived mass extinction by 700,000 years
11. EARTH: How dinosaurs arose
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Duck-billed dinosaurs endured long, dark polar winters
(Date:8/4/2015)... ) today reported financial and operating results for the second quarter ... quarter contract revenue of $ 85.2 million, a ... of 26 % , Second quarter adjusted ... royalties in the current quarter , Operating cash ... to present another strong financial quarter, with all our divisions achieving ...
(Date:7/31/2015)... -- Den 10. internationale konference om Genomik (ICG-10, ... 25. oktober i Shenzhen , Kina. ... år. Siden starten i 2006 er ICB blevet en ... er en af de mest dynamiske, entusiastiske og sjove ... gennembrud og fremskridt inden for ,omik,-forskning, som yderligere vil ...
(Date:7/31/2015)... SHENZHEN, China , 31 de julho de 2015 ... Genômica (ICG-10, www.icg-10.org ) será realizada pela BGI de ... China . A conferência está ... inauguração em 2006, a ICG se tornou uma das ... e um dos encontros científicos mais dinâmicos, entusiastas e ...
Breaking Biology News(10 mins):AMRI Announces Second Quarter 2015 Results 2AMRI Announces Second Quarter 2015 Results 3AMRI Announces Second Quarter 2015 Results 4AMRI Announces Second Quarter 2015 Results 5AMRI Announces Second Quarter 2015 Results 6AMRI Announces Second Quarter 2015 Results 7AMRI Announces Second Quarter 2015 Results 8AMRI Announces Second Quarter 2015 Results 9AMRI Announces Second Quarter 2015 Results 10AMRI Announces Second Quarter 2015 Results 11AMRI Announces Second Quarter 2015 Results 12AMRI Announces Second Quarter 2015 Results 13AMRI Announces Second Quarter 2015 Results 14AMRI Announces Second Quarter 2015 Results 15AMRI Announces Second Quarter 2015 Results 16AMRI Announces Second Quarter 2015 Results 17AMRI Announces Second Quarter 2015 Results 18AMRI Announces Second Quarter 2015 Results 19AMRI Announces Second Quarter 2015 Results 20AMRI Announces Second Quarter 2015 Results 21AMRI Announces Second Quarter 2015 Results 22AMRI Announces Second Quarter 2015 Results 23AMRI Announces Second Quarter 2015 Results 24Den 10. internationale konference om Genomics (ICG-10) åbner i oktober 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 3
... depends on the nutritional value and yield of staple food ... an increase in toxic compounds, a decrease in protein content ... 2 and drought conditions. The research, to ... at the Society for Experimental Biology Annual Meeting in Glasgow, ...
... of survival is now better understood. For the first ... Berkeley National Laboratory observed the chemical changes in individual ... kill them. The team tracked the chemical changes ... normally can only exist in an oxygen-free environment. They ...
... Paths" is a response to confusion and uncertainty on ... and electricity -- as a prominent factor in meeting ... joining forces to seek resolution of issues related to ... opportunities to integrate biomass production with food crops and ...
Cached Biology News:Scientists track chemical changes in cells as they endure extreme conditions 2Scientists track chemical changes in cells as they endure extreme conditions 3Sustainable bioenergy project has global launch 2
(Date:8/31/2015)... Milpitas, Calif. (PRWEB) , ... August 31, 2015 ... ... earlier this year to bring together supply chain risk management and resiliency practitioners ... collaborate, develop and share best practices, and be recognized for their innovations and ...
(Date:8/31/2015)... , Aug. 31, 2015 Research and Markets ... "Mexico Biomedical Sensors Market - Growth, Trends & ... The Mexico Biomedical Sensors market is estimated ... 2.68% over the period 2014-2020 The near ... the genetic formulation of each individual. These sensors can ...
(Date:8/31/2015)... MARLBOROUGH, Mass. , Aug. 31, 2015 /PRNewswire/ ... biotechnology company focused on discovering and developing innovative ... ophthalmology, today announced that the 30-day review period ... Drug (IND) for ocular indications with the U.S. ... the IND is now active. ...
(Date:8/31/2015)... STOCKHOLM , Aug. 31, 2015 Trimb ... an agreement to acquire YouMedical Group BV ("YouMedical"), a ... YouMedical has total annual sales of approximately EUR 16 ... categories. "Our ambition is to build ... an important step toward that goal. YouMedical gives us ...
Breaking Biology Technology:Global Supply Chain Resiliency Council Announces Incorporation and Web Site Launch 2Global Supply Chain Resiliency Council Announces Incorporation and Web Site Launch 3Mexico Biomedical Sensors Market Report 2015-2020 2RXi Pharmaceuticals Announces Advancements in its Ophthalmology Clinical Program with RXI-109 2RXi Pharmaceuticals Announces Advancements in its Ophthalmology Clinical Program with RXI-109 3RXi Pharmaceuticals Announces Advancements in its Ophthalmology Clinical Program with RXI-109 4
... . - GE Healthcare and the Vancouver ... million agreement under which the authority would purchase 48 new ... advanced ultrasound technologies and establish new clinical workflow and administrative ... board, said the agreement will result in more precise diagnosis ...
... a series of articles on developing start-up companies in the ... business taxes. , , Madison, Wis. ... begin hiring workers. As discussed in the previous article, you ... Security and Medicare taxes, and unemployment taxes ...
... has added so much complexity to information technology systems ... ,That according to John Swainson, president and CEO of ... address at the 2007 Fusion CEO-CIO Symposium . ... relationship between business and information technology. , ,That relationship ...
Cached Biology Technology:Early Stage 7, Part I: Just what is an employee? 2Early Stage 7, Part I: Just what is an employee? 3Early Stage 7, Part I: Just what is an employee? 4Early Stage 7, Part I: Just what is an employee? 5Fusion 2007: CA chief says IT complexity raises risk 2Fusion 2007: CA chief says IT complexity raises risk 3
... developed specifically for pulsed field separations of DNA larger than 2, ... megabase pairs. This agarose has the highest gel ... ... Chromosomal Grade, ...
... this enzyme exists predominantly as XDH which ... a critical plasma antioxidant. During ischemia, ... radical producing XO by oxidation of essential ... cleavage of the amino-terminus. AO has ...
Rabbit Anti-Human Janus Kinase 2 (JAK2 Polyclonal Antibody Family: Protein Kinase Sub-Family: TYK2/JAK Applications: ELISA, Western Blot...
... 2 (VMAT2). An antibody made to the ... at ~55 kDa in postnuclear supernatants of ... wild type cells (2). Some additional bands, ... also detected and remain unaffected by the ...
Biology Products: