Navigation Links
The pain of evolution: A big toothache for reptiles
Date:4/18/2011

Our susceptibility to oral infection has some parallels to those of ancient reptiles that evolved to eat a diet incorporating plants in addition to meat. That's according to Robert Reisz from the University of Toronto and his colleagues who found evidence of bone damage due to oral infec-tion in Paleozoic reptiles as they adapted to living on land. Their findings, published online in Springer's journal Naturwissenschaften The Nature of Science, predate the previous record for oral and dental disease in a terrestrial vertebrate by nearly 200 million years.

The researchers investigated the jaws of several well-preserved specimens of Labidosaurus hama-tus, a 275-million-year-old terrestrial reptile from North America. One specimen stood out because of missing teeth and associated erosion of the jaw bone. With the aid of CT-scanning, Reisz and colleagues found evidence of a massive infection. This resulted in the loss of several teeth, as well as bone destruction in the jaw in the form of an abscess and internal loss of bone tissue.

As the ancestors of advanced reptiles diversified to life on land, many evolved dental and cranial specializations to feed more efficiently on other animals and to incorporate high-fiber plant leaves and stems into their diet. The primitive dental pattern in which teeth were loosely attached to the jaws and continuously replaced, changed in some lineages to be strongly attached to the jaw, with little or no tooth replacement. This was clearly advantageous to some early reptiles, allowing them to chew their food and thus improve nutrient absorption. The abundance and global distribution of Labidosauris and its kin attest to the evolutionary success of this strategy.

However, Reisz and his colleagues suggest that as this reptile lost the ability to replace teeth, the likelihood of infections of the jaw, resulting from damage to the teeth, increased substantially. This is because prolong
'/>"/>

Contact: Renate Bayaz
renate.bayaz@springer.com
49-622-148-78130
Springer
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evolution: A Developmental Approach
2. Inventions of evolution: What gives frogs a face
3. UH: Insular evolution: Large and big-footed voles in an outer archipelago
4. Evolution: Crabs go deep to avoid hot water
5. Forced evolution: Can we mutate viruses to death?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... C-Labs LLC, a leading provider of remote ... today announced the appointment of John Traynor ... strategic advisor to the firm, Mr. Traynor will now ... based out of the C-Labs office in ... Muench , Chief Executive Officer. Photo - ...
(Date:11/18/2014)... , Nov. 18, 2014  The Secure ... Industry Association today jointly announce the formation of ... release of its Identity and Biometric Entry ... The Framework received official support from BORDERPOL, the ... to improve and provide expertise regarding border security, ...
(Date:11/18/2014)... Md. , Nov. 17, 2014 The Parenteral ... and U.S. regulatory agencies will speak and at least seven ... Metrics Conference at the Omni Shoreham Hotel in ... pleased once again to have significant support from the regulatory ... Europe in our effort to help ...
Breaking Biology News(10 mins):C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2
... Atlantic right whale's future looks grim if the current ... professor of oceanography Douglas Nowacek and a group of ... co-authored a paper titled "North Atlantic Right Whales in ... the journal Science. , In it, Nowacek and his ...
... the final step in the completion of new blood vessel ... Diego (UCSD) School of Medicine team in research that promises ... by cutting off the tumor blood supply. , The research ... at UCSD and a member of the Rebecca and John ...
... Scientists may have found a way to dramatically slow ... , That's the promising implication of an animal study ... at Birmingham (UAB) and the University of Florida (UF) ... the National Academy of Sciences. , The research team ...
Cached Biology News:FSU scientist warns North Atlantic right whale facing extinction 2Unexpected lock and key mechanism found for the assembly of tumor blood vessels 2Unexpected lock and key mechanism found for the assembly of tumor blood vessels 3Discoveries by UAB and Florida scientists may help transplanted organs survive longer 2
(Date:11/22/2014)... 2014   , ... Officer zu KLOX    ... Financial Officer bestellt    KLOX ist ... jüngst zugelassenen Behandlungssystems zur Wundheilung zu beginnen    , ... ist sehr erfreut, die folgenden personellen Veränderungen anzukündigen: ...
(Date:11/21/2014)... 20, 2014 Author Matthew J. Pallamary’s ... the Other Side” published as a tribute to ... the “Fiction: Short Story” category of the 2014 ... and CEO of USA Book News, said this year’s ... publishers, including Simon & Schuster, Penguin, John Wiley & ...
(Date:11/21/2014)... November 21, 2014 Why did Stephen ... Albert Einstein so instantly recognizable? Why have they become ... astronomer and author Hilton Ratcliffe seeks out the answers ... at all to do with science. In " Stephen ... , November 21, 2014), Ratcliffe puts it plainly: ...
(Date:11/21/2014)... YORK and SAN DIEGO , ... ), today announced that President and CEO Marc Hedrick , ... DATE:   Thursday, December 4, 2014 TIME: ... Click here or paste this URL into your ... recommended that investors pre-register to save time and receive event ...
Breaking Biology Technology:KLOX Technologies meldet Neubesetzung von Führungspositionen 2KLOX Technologies meldet Neubesetzung von Führungspositionen 3KLOX Technologies meldet Neubesetzung von Führungspositionen 4KLOX Technologies meldet Neubesetzung von Führungspositionen 5Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 2“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 3“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 4Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 2Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 3Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 4
... to ICD and CRT-D ... device ... BSX ) today announced a new clinical science initiative,ALTITUDE, which will ... the substantial LATITUDE data to,seek answers to common questions related to ...
... May 15 Human Genome Sciences,Inc. (Nasdaq: ... has joined the,Company as Vice President, Hepatology Franchise. ... Hematology, Genentech Corporation, will,report to Barry A. Labinger, ... http://www.newscom.com/cgi-bin/prnh/20080416/HGSLOGO ), "Kevin McRaith brings ...
... QUEBEC CITY, May 15 /PRNewswire-FirstCall/ - AEterna Zentaris ... biopharmaceutical company focused on,endocrine therapy and oncology, today ... Officer, Dennis Turpin, CA, will present a,company overview ... Global,Healthcare Conference on Tuesday, May 20, 2008 at ...
Cached Biology Technology:Boston Scientific Announces Program to Analyze Latitude(R) Patient Monitoring Data 2Boston Scientific Announces Program to Analyze Latitude(R) Patient Monitoring Data 3Boston Scientific Announces Program to Analyze Latitude(R) Patient Monitoring Data 4Human Genome Sciences Names Kevin P. McRaith Vice President, Hepatology Franchise 2Human Genome Sciences Names Kevin P. McRaith Vice President, Hepatology Franchise 3AEterna Zentaris to Present at Upcoming Rodman & Renshaw Global Healthcare Conference and AUA Annual Meeting 2
... carry-over contamination, which prevents false positive ... from previous PCR amplifications without degrading ... amplification ,Optimized for use with GeneAmp ... systems , The GeneAmp PCR Carry-over ...
... enzyme that catalyzes the conversion,of starch ... maltotriose and,dextrins. The level of a-amylase ... are of clinical importance,1-3 while plant ... industry.4, The EnzChek Amylase Assay Kit ...
... that catalyzes the hydrolysis of,starch to ... dextrins. The,level of a-amylase in various ... of,clinical significance in the diagnosis of ... and microbial a-amylases are,important enzymes for ...
Rat monoclonal [20d5] to NKG2A + C+ E ( Abpromise for all tested applications). Antigen: Tissue / cell preparation (Mouse): CHO transfected cells expressing the B6 allele of NKG2A. Entrez Gen...
Biology Products: