Navigation Links
Super-sized muscle made twin-horned dinosaur a speedster
Date:10/14/2011

A meat-eating dinosaur that terrorized its plant-eating neighbours in South America was a lot deadlier than first thought, a University of Alberta researcher has found.

Carnotaurus was a seven-metre-long predator with a huge tail muscle that U of A paleontology graduate student Scott Persons says made it one of the fastest running hunters of its time.

A close examination of the tail bones of Carnotaurus showed its caudofemoralis muscle had a tendon that attached to its upper leg bones. Flexing this muscle pulled the legs backwards and gave Carnotaurus more power and speed in every step.

In earlier research, Persons found a similar tail-muscle and leg-power combination in the iconic predator Tyrannosaurus rex. Up until Persons published that paper, many dinosaur researchers thought T. rex's huge tail might have simply served as a teeter-totter-like counterweight to its huge, heavy head.

Persons' examination of the tail of Carnotaurus showed that along its length were pairs of tall rib-like bones that interlocked with the next pair in line. Using 3-D computer models, Persons recreated the tail muscles of Carnotaurus. He found that the unusual tail ribs supported a huge caudofemoralis muscle. The interlocked bone structure along the dinosaur's tail did present one drawback: the tail was rigid, making it difficult for the hunter to make quick, fluid turns. Persons says that what Carnotaurus gave up in maneuverability, it made up for in straight ahead speed. For its size, Carnotaurus had the largest caudofemoralis muscle of any known animal, living or extinct.

Persons published these findings in PLoS ONE on Oct.14, with supervisor Philip Currie, a paleontology professor at the U of A.


'/>"/>
Contact: Brian Murphy
brian.murphy@ualberta.ca
780-492-6041
University of Alberta
Source:Eurekalert

Page: 1

Related biology news :

1. Super-sized world: Conference addresses global obesity epidemic, explores policies, interventions
2. First NIH-funded personalized drug development center in US will focus on muscle disease
3. Lift weights, eat mustard, build muscles?
4. Arctic ground squirrels muscle up to hunker down
5. Foods rich in protein, dairy products help dieters preserve muscle and lose belly fat: study
6. Researchers investigate muscle-building effect of protein beverages for athletes
7. Crucial role for molecule in muscle development
8. College scientist cites enlarged skeletal muscles as reason birds exist
9. How muscle develops: A dance of cellular skeletons
10. Movement without muscles
11. NIH scientists identify gene that could hold the key to muscle repair
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/15/2016)... March 15, 2016 Yissum Research Development ... technology-transfer company of the Hebrew University, announced today the ... sensing technology of various human biological indicators. Neteera Technologies ... million from private investors. ... the detection of electromagnetic emissions from sweat ducts, enables ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ... at AP Images ( http://www.apimages.com ) - Germany ... produce the new refugee identity cards. DERMALOG will be unveiling this ... Hanover next week.   --> ... to produce the new refugee identity cards. DERMALOG will be unveiling ...
(Date:3/10/2016)... BELL, Pa. , March 10, 2016   Unisys ... U.S. Customs and Border Protection (CBP) is testing its ... San Diego to help identify certain ... States . The test, designed to help determine the ... pedestrian environment, began in February and will run until May ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... York , May 4, 2016 ... Transparency Market Research "Metabolomics Market - Global Industry Analysis, ... the metabolomics market is anticipated to expand at a ... USD 2,494.8 million by 2024. Metabolomics is ... metabolites, within cells, biofluids, tissues or organisms. Together, these ...
(Date:5/4/2016)... , ... May 04, 2016 , ... ... innovations in biotechnology to help treat hormonal and stress related hair loss. With ... captured the hearts of key opinion leaders in the medical and salon channels ...
(Date:5/3/2016)... (PRWEB) , ... May 03, 2016 , ... ... enterprise talent development, skill-building and compliance training platform on mobile devices, today ... course: Overview of Regulatory Requirements for Medical Devices. The course is essential for ...
(Date:5/3/2016)... ... May 03, 2016 , ... Leading CEOs from biotech, pharmaceutical, ... and June 1st at The Four Seasons Hotel Boston. , The Boston CEO ... offering exclusive access to key decision makers who influence deal making and investment. ...
Breaking Biology Technology: