Navigation Links
Good dentistry may have saved the dinosaurs
Date:12/14/2009

Infectious diseases can be transmitted by sneezing, touching, or for Tasmanian devils biting each other on the face, a habit that may have driven the dinosaurs to extinction through the transmission of a protozoan parasite.

Jacqueline Upcroft, a member of f1000 Biology, highlights the 'paleobiological detective work' of David Varricchio and colleagues published in PLoS One. This led them to deduce that a protozoan parasite was to blame for the diseased jaw bones seen in many tyrannosaurid fossils.

The parasite's modern-day equivalent, which infects birds, eats away at the jawbone and can cause ulcers so severe that the host starves to death. Living in the jaw, the parasite may have been passed from one dinosaur to another during head biting.

Upcroft said, "this organism commonly infects doves, pigeons, turkeys and raptors, causing necrotic ulceration in the upper digestive tract," and in extreme cases it can fully penetrate the bone.

The similarity of the fossilized jawbones and modern-day samples suggests that the parasite was deadly enough to kill infected dinosaurs. Furthermore, as Upcroft notes, "this may not have been an isolated situation but may have occurred en masse and led to the extinction of the species."


'/>"/>

Contact: Steve Pogonowski
press@f1000.com
Faculty of 1000: Biology and Medicine
Source:Eurekalert

Page: 1

Related biology news :

1. USC School of Dentistry researchers uncover link between osteoporosis drugs and jaw infection
2. NYU College of Dentistry awarded $1.9 million NIH grant for HIV research
3. Saved by junk DNA
4. Grand Canyon may be as old as dinosaurs, says new study
5. Genetic sequencing of protein from T. rex bone confirms dinosaurs link to birds
6. Did the solar system bounce finish the dinosaurs?
7. Mass extinctions and the evolution of dinosaurs
8. Geologist who linked cosmic strike to dinosaurs extinction takes top prize
9. Study of polar dinosaur migration questions whether dinosaurs were truly the first great migrators
10. CT scans reveal that dinosaurs were airheads
11. Male dinosaurs may have been prehistoric babysitters, study shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... NEW YORK , June 2, 2016   The ... (Weather), is announcing Watson Ads, an industry-first capability in which ... advertising, by being able to ask questions via voice or ... Marketers have long ... with the consumer, that can be personal, relevant and valuable; ...
(Date:5/24/2016)... IRVINE, Calif. , May 24, 2016 Ampronix facilitates superior patient care ... LMD3251MT  3D medical LCD display is the latest premium product recently added to ... ... ... Sony 3d Imaging- LCD Medical Display- Ampronix News ...
(Date:5/12/2016)... , May 12, 2016 WearablesResearch.com , ... published the overview results from the Q1 wave of ... recent wave was consumers, receptivity to a program where ... with a health insurance company. "We were ... share," says Michael LaColla , CEO of Troubadour ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... LOUISVILLE, Ky. , June 23, 2016 /PRNewswire/ ... from two Phase 1 clinical trials of its ... double-blind, placebo-controlled, single and multiple ascending dose studies ... and pharmacodynamics (PD) of subcutaneous injection in healthy ... APL-2 subcutaneously (SC) either as a single dose ...
(Date:6/23/2016)... NEW YORK , June 23, 2016 ... the trading session at 4,833.32, down 0.22%; the Dow Jones ... the S&P 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ... BIND Therapeutics Inc. (NASDAQ: BIND ). Learn more ...
(Date:6/23/2016)... ... June 23, 2016 , ... Velocity Products, ... tools designed, tuned and optimized exclusively for Okuma CNC machining centers at The ... of a collaboration among several companies with expertise in toolholding, cutting tools, machining ...
(Date:6/22/2016)... , June 22, 2016 Cell Applications, ... allow them to produce up to one billion ... lot within one week. These high-quality, consistent stem ... preparing cells and spend more time doing meaningful, ... a proprietary, high-volume manufacturing process that produces affordable, ...
Breaking Biology Technology: