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:10/31/2014)... project has developed a new test that can distinguish ... strain of avian influenza virus or "bird flu" with ... a significant step in the fight against this often ... the poultry populations of South East Asia, particularly Indonesia ... its possible transmission to humans and the threat of ...
(Date:10/30/2014)... life, cells immediately begin accepting assignments to become a ... humans, are special. The cells of mammalian embryos get ... the protective placenta or to commit to forming the ... research from Michigan State University has revealed key discoveries. ... PLOS Genetics , provide insights into where ...
(Date:10/30/2014)... York | Heidelberg, 30 October 2014 Biological membranes ... better understanding of adsorption of solution ions onto ... cells. Now, a new study provides a quantitative ... surrounding solution ions. Joanna Kotyńska and Zbigniew Figaszewski ... authors of a study describing these findings, just ...
Breaking Biology News(10 mins):New step towards eradication of H5N1 bird flu 2Identifying the source of stem cells 2Ion adsorption matter in biology 2
... a mathematical model of the mechanism birds use to ... feather structures involve the coordination of at least two ... "Understanding these mechanisms of feather growth gives a whole ... Richard Prum, senior author on the study. Prum is ...
... Conservation Union reported an unprecedented decline in biodiversity, with ... most species is loss of habitat. And as habitat ... accurately predict the population dynamics and extinction risk of ... new study, John Drake tests models traditionally used to ...
... cause of hospital-acquired infections can persist for days ... healthcare settings, including bed linens, computer keyboard covers ... at the 105th General Meeting of the American ... is a major cause of hospital-acquired infections in ...
Cached Biology News:Simple explanation for complex pattern of feather development 2Traditional models underestimate extinction rates 2
(Date:10/30/2014)... Isis Pharmaceuticals, Inc. (NASDAQ: ISIS ), the leader ... company overview at the Nomura Biotechnology Conference on Thursday, November ... MA. A live webcast of the ... of the Company,s website, www.isispharm.com .  A replay will ... will be archived for a limited time. About ...
(Date:10/30/2014)... of the key challenges in the development of quantum ... , In a paper published today (28 October) in ... show how to make a new type of flexibly ... such as high-precision sensors and specialised superfast computers, often ... the methods for trapping these tiny particles are hugely ...
(Date:10/27/2014)... The new research report, “Gas ... Medium), Sub-type (Primary & Secondary), and End-User (Transmission ... & Power Generation) - Trends and Forecasts to ... analysis and forecasting of the market size. , ... 52 Figures spread through 146 Pages and in-depth ...
(Date:10/27/2014)... -- Kalorama Information says that PCR is demonstrating its ... the United States and is the dominant ... the FDA,s Emergency Use Authorization (EUA) to authorize the emergency ... of the Ebola virus was an indication that the ... IVD industry and its biennial survey on diagnostics markets ...
Breaking Biology Technology:Isis Pharmaceuticals to Present at the Nomura Biotechnology Conference 2Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 2Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 3Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 4Kalorama: PCR The Go-to Test in Ebola Fight 2Kalorama: PCR The Go-to Test in Ebola Fight 3
... Reproductive Health Drugs Advisory Committee met today to discuss the new drug ... Desire Disorder (HSDD) in pre-menopausal women.  The advisory committee was convened by ... FDA will consider the committee,s advice as part of its final assessment ... , ...
... , LONDON , ... in,The Lancet reports that using an artificial pancreas system ... children and,adolescents with type 1 diabetes.(1) Moreover, the first ... and glucagon has shown,that this system can prevent development ...
... gush out of the desert floor at a place called Ash ... species found nowhere else in the world. A new Brigham ... is completing a 15,000-year journey, flowing slowly underground from what is ... bombs there for four decades, and a crack in the Earth,s ...
Cached Biology Technology:Artificial Pancreas can Prevent the Development of Hypoglycemia 2Artificial Pancreas can Prevent the Development of Hypoglycemia 3
... The 820-MS features Varians unique ... provides simple, routine removal of troublesome ... more flexible interference-free analysis without the ... quadrupole ion guides, or cells. And, ...
a1-Antitrypsin (human, alpha-1 AT)...
... are used to study co-translational and ... events such as signal peptide cleavage, ... can be examined by the translation ... in the presence of these microsomal ...
... Certify products ATP-Free using Mo Bio ... sensitive ATP-Free certification service that will allow you ... level of accuracy and enable you to deliver ... Mo Bios ATP detection limit is 3.5 ...
Biology Products: