Navigation Links
Researcher explores the evolution of largest mammals over the past 100 million years
Date:11/29/2010

Researchers have demonstrated that the extinction of dinosaurs 65 million years ago paved the way for mammals to get bigger about a thousand times bigger than they had been.

The study, released today in the prestigious journal Science, is the first to quantitatively explore the patterns of body size of mammals after the demise of the dinosaurs.

The research, funded by a National Science Foundation Research Coordination Network grant, was led by scientists at the University of New Mexico and brought together an international team of palaeontologists, evolutionary biologists, and macroecologists from universities around the world.

To document what happened to mammals after the extinction of dinosaurs, researchers collected data on the maximum size for major groups of land mammals on each continent, including Perissodactyla, odd-toed ungulates such as horses and rhinos; Proboscidea, which includes elephants, mammoth and mastodon Xenarthra; the anteaters, tree sloths, and armadillos; as well as a number of other extinct groups. The researchers spent three years compiling the large database.

Dr Alistair Evans, a co-author on the paper and an Australian Research Fellow at Monash University, said the database is unique.

"The database allows us for the first time to compare maximum size of mammals on different continents since the extinction of the dinosaurs."

The goal of the research was to revisit key questions about size, specifically in mammals.

"Size affects everything about an animal, from feeding and reproduction to extinction. We really wanted to know how big the many different groups of mammals evolved to be, and how quickly they got there - we were looking for the biggest of the big," said Dr Evans.

Researchers found that mammals grew from a size of about ten kilograms when they were sharing the Earth with dinosaurs to a maximum of 17 tonnes afterwards. Moreover, the pattern
'/>"/>

Contact: Megan Gidley
media@monash.edu
619-903-4840
Monash University
Source:Eurekalert

Page: 1 2

Related biology news :

1. University of Minnesota engineering researcher finds new way to fight antibiotic-resistant bacteria
2. Iowa State, Ames Lab researcher develops new way to study single biological molecules
3. Researchers kick-start ancient DNA
4. Gene links to anorexia found by Childrens Hospital of Philadelphia researchers
5. UGA researchers identify key enzyme that regulates the early growth of breast cancer cells
6. Researchers insert identification codes into mouse embryos
7. Researchers learn that genetics determine winter vitamin D status
8. Researchers link an African lizard fossil in Africa with the Komodo dragon in Indonesia
9. FSU researchers helping K-12 teachers bring science down to Earth
10. As Arctic temperatures rise, tundra fires increase, researchers find
11. Researchers discover potential genetic target for heart disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... Market Intelligence today released forecasts from "The Global National ... market for National Electronic ID (eID) programs will generate $54 ... the number of National eID cards in circulation will double ... , with its vast population, will dominate the market representing ... Europe trails a distant second at 11%. ...
(Date:7/10/2014)... German . ... caught a central step of photosynthesis in action for the ... Arizona State University used the world,s most powerful X-ray flashlight ... frames of a molecular complex called photosystem II as it ... the oxygen in earth,s atmosphere. The researchers report their results ...
(Date:7/10/2014)... Channel has resulted in the removal of many top ... barrel, for increasing amounts of shellfish to make up ... species at the head of the food chain are ... completely., These are some of the findings of a ... association with international non-profit research organization WorldFish. They analysed ...
Breaking Biology News(10 mins):National Electronic ID Programs Generate $54 Billion Between 2013 and 2018 with 3.5 Billion National eID Card Holders Worldwide 2Scientists watch photosynthesis in action 2Scientists watch photosynthesis in action 3Overfishing in the English Channel leaves fisherman scraping the bottom of the barrel 2Overfishing in the English Channel leaves fisherman scraping the bottom of the barrel 3
... 2011 With millions of people warding off winter,s ... raising red flags about the potential health effects of ... in the American Chemical Society,s (ACS,) journal, Chemical ... inhaled into the lungs from wood smoke may have ...
... Darwin, the "tree of life" has been the preeminent metaphor ... changing of individual species. The discovery that a large ... species of fungus to another, however, significantly strengthens the argument ... more appropriate. "The fungi are telling us something important ...
... reports that family mealtimes that contain three ingredients in the ... who have chronic asthma. "Family mealtimes, when they,re done ... reduced risk of substance abuse, eating disorders, and obesity. In ... we can see minute by minute which factors deliver these ...
Cached Biology News:Discovery of jumping gene cluster tangles tree of life 2Discovery of jumping gene cluster tangles tree of life 3Recipe for family mealtimes calls for 3 ingredients in the right amounts 2
(Date:7/10/2014)... Product and process impurities in biopharmaceuticals ... are often “lost in the noise,” making their ... Dr. Rowel Tobias, Senior Scientist, Protein Chemistry at ... Quality at Nanotherapeutics, Inc., to lear about a ... and quantitation while achieving the required specificity and ...
(Date:7/10/2014)... Robert Harman, DVM, Founder and CEO of ... to announce the relaunch of his highly informative blog, now ... called “ What are Stem Cells ?” Dr. Harman’s ... foundation in the basics of stem cell therapy so that ... type of treatment when considering regenerative medicine. , A veterinarian ...
(Date:7/10/2014)... July 10, 2014 On July ... Medvedev , presented Russia,s first ... . The Company is developing a unique project called ... BIOCAD develops a number of innovative drugs based on ... The ceremony took place at the International Exhibition "Innoprom ...
(Date:7/10/2014)... 2014 -- According to the International Atomic Energy ... comes from terrorists acquiring sufficient quantities of plutonium ... crude nuclear explosive device. The IAEA also notes ... involved gram-level quantities, which can be challenging to ... a new study appearing this week in the ...
Breaking Biology Technology:Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 3Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Sensitive detection method may help impede illicit nuclear trafficking 2
... Radio frequency identification technology is often touted as a way ... world, the technology is bringing other, perhaps more important benefits: ... supply chain now, and there are tremendous applications in health ... the marketplace," said Reik Read, an analyst with Robert ...
... Madison, Wis. Wisconsin's research and development funding has exceeded expectations, reaching ... had set a target of $3.3 billion by 2005. , ... R&D spending per capita, and 13 th in academic R&D ... match the growth rate in R&D the last few years," said ...
... - TEKLYNX International a developer of ... (AIDC) marketplace, has announced LABELVIEW 8 label design and ... code label printing. , ,The updates enhance label ... greatly extend Pocket LABELVIEW printer support to over 1,000 ...
Cached Biology Technology:RFID can be a matter of life and death in the medical world 2RFID can be a matter of life and death in the medical world 3RFID can be a matter of life and death in the medical world 4RFID can be a matter of life and death in the medical world 5New report says Wisconsin R&D spending exceeding expectations 2
Human HAPLN1 MAb (Clone 316119) Protein Family: Hyaluronan (HA) & HA Binding Proteins, Proteoglycan Regulators...
Reacts with MBP from human, bovine and rat, epitope 129-138. Reacts weakly with rabbit. Does not react with guinea pig....
SEQUENASE PCR PRODUCT PRE-SEQU, 1 EA. Category: SEQUENASE....
Cyno macaque plasma and serum - various quantities available...
Biology Products: