Navigation Links
Prehistoric predators with supersized teeth had beefier arm bones
Date:1/4/2012

Durham, NC The toothiest prehistoric predators also had beefier arm bones, finds a new fossil study.

Sabertooth tigers may come to mind, but these extinct cats weren't the only animals with fearsome fangs. Take the false sabertooth cats also known as nimravids and their catlike cousins, a family of carnivores called the Barbourofelidae.

Both of these mammal groups lived millions of years before cats came to be, and had knife-like canines along with well-built arm bones, said author Julie Meachen, a paleontologist at the National Evolutionary Synthesis Center in Durham, NC.

This killer trait combination arose repeatedly in different sabertooth predators over time, Meachen reports in a new study presumably because it gave them an advantage when catching and killing prey.

The long, thin teeth of sabertooth cats look formidable, but they're actually fragile compared to felines living today, she explained. "Cats living today have canines that are shorter and round in cross-section, so they can withstand forces in all directions," Meachen said. "This comes in handy for hunting their teeth are better able to withstand the stress and strain of struggling prey without breaking."

In contrast, the elongated canines of saber-toothed cats were flattened side-to-side and more oval in cross-section, which made them more vulnerable to fracture.

In a previous study published in 2010, Meachen found that the sabertooth cat Smilodon fatalis had exceptionally thick arm bones when compared with its feline cousins. "Thick, robust bones are an indicator of forelimb strength," Meachen said. The results suggest these animals may have relied on their forelimbs to help catch and kill their prey without fracturing their fangs.

But in studying the fossil skeletons of other sabertooth predators, Meachen had a hunch that the combination of fragile knife-like canines and beefy arm bones might not have been unique to saberto
'/>"/>

Contact: Robin Ann Smith
rsmith@nescent.org
919-668-4544
National Evolutionary Synthesis Center (NESCent)
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Getting warmer? Prehistoric climate can help forecast future changes
2. Male dinosaurs may have been prehistoric babysitters, study shows
3. At 2,500 pounds and 43 feet, prehistoric snake is the largest on record
4. Largest prehistoric snake on record discovered in Colombia
5. Toothsome research: Deducing the diet of a prehistoric hominid
6. Poisonous prehistoric raptor discovered by research team from Kansas and China
7. IUs Carlson among team of scientists announcing new species of prehistoric man
8. Prehistoric fish extinction paved the way for modern vertebrates
9. Prehistoric frogs face extinction
10. New research will unravel Arizonas prehistoric puzzle of the Hohokam ceramic industry
11. Cactus genes connect modern Mexico to its prehistoric past
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Prehistoric predators with supersized teeth had beefier arm bones
(Date:7/28/2014)... of Medicine have pinpointed a mechanism in part of the ... blood, linking it to both type 1 and type 2 ... of Proceedings of the National Academies of Sciences . ... located in a part of the hypothalamus known as the ... that control glucose levels in the blood," said lead author ...
(Date:7/28/2014)... cure for Alzheimer,s disease and other forms of dementia, ... finding treatment. , University of Washington bioengineers have a ... changes of the body,s normal proteins into a state ... heart disease, Type 2 diabetes and Lou Gehrig,s disease. ... from their normal state into an abnormally folded form ...
(Date:7/28/2014)... Hospital study found that 73 percent of adult survivors ... developing metabolic syndrome and related health problems by failing ... the current issue of the journal Cancer . ... of childhood cancer in the study had metabolic syndrome, ... blood pressure, abdominal obesity, elevated triglyceride and other abnormalities ...
Breaking Biology News(10 mins):Glucose 'control switch' in the brain key to both types of diabetes 2New protein structure could help treat Alzheimer's, related diseases 2New protein structure could help treat Alzheimer's, related diseases 3Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3
... A Web site is a better source of information ... to a study of low-income mothers reported in the January ... http://www.jneb.org/) . Led by Kami J. Silk, Ph.D., of ... mothers with nutrition information in different formats. One group ...
... stars have understudies. Now, an increasingly popular radioactive ... by researchers at the National Institute of Standards ... medical imaging, speed up clinical trials of many ... medical treatment. The number of medical images ...
... knees on your list of New Year,s resolutions? ... wait longer to pursue knee-replacement surgery than men do. ... stand the pain, these women may also risk putting ... according to Lynn Snyder-Mackler, Distinguished Alumni Professor in UD,s ...
Cached Biology News:For nutrition info, moms like the Web best 2Radioactive 'understudy' may aid medical imaging, drug development 2Listen-up ladies: Don't postpone knee-replacement surgery 2Listen-up ladies: Don't postpone knee-replacement surgery 3
(Date:7/29/2014)... 29, 2014   Sequenom, Inc. (NASDAQ: ... innovative genetic analysis solutions, and Mayo Medical Laboratories ... in the United States , have ... and applications. "We have great appreciation for ... and we welcome the opportunity to partner with the ...
(Date:7/29/2014)... CITY, Md. , July 29, 2014 /PRNewswire/ ... announced a new and updated program for the ... 10 – 12, 2014 in Amelia Island ... CROs, sites and investigators remains unchanged, however, the ... purposeful exchange and networking opportunity among all stakeholders ...
(Date:7/29/2014)... Calif. , July 29, 2014 /PRNewswire-iReach/ -- ... agreement with FORMA Therapeutics, Inc., to provide access ... proprietary fragment-based lead discovery platform for novel small ... excited about the opportunity to work with FORMA ... of epigenetics and protein homeostasis. FORMA Therapeutics, decision ...
(Date:7/29/2014)... Rockville, MD (PRWEB) July 29, 2014 ... (ITI), a vaccine pioneer in the biotechnology industry, ... firm Newport Coast Securities, Inc. to explore financing ... commercializing LAMP-vax technology, a breakthrough vaccine platform with ... immunotherapy market. The company exclusively licensed the well-established ...
Breaking Biology Technology:Sequenom Enters Into License Agreement With Mayo Medical Laboratories 2Sequenom Enters Into License Agreement With Mayo Medical Laboratories 3Sequenom Enters Into License Agreement With Mayo Medical Laboratories 4TransCelerate, Lilly, Pfizer, and FDA Highlight Collaborative Program at the Site Solutions Summit 2TransCelerate, Lilly, Pfizer, and FDA Highlight Collaborative Program at the Site Solutions Summit 3Nanosyn Announces Expanded Partnership With FORMA Therapeutics 2Immunomic Therapeutics Engages Newport Coast Securities, Inc. 2Immunomic Therapeutics Engages Newport Coast Securities, Inc. 3
... system, described as a breakthrough advancement in breast imaging, ... Drug Administration. , ,The system offers more evidence that ... tools that enable higher quality images for the detection ... GE Healthcare said the Senographe Essential system ...
... we asked William Yasnoff, founder of the eHealthTrust initiative, why ... that today are fractured and limited. , , ... William Yasnoff Yasnoff is a speaker at ... deliver a presentation titled "A New Patient-Centric and Sustainable Approach ...
... Madison, Wis. The Wisconsin Technology Council ... legislature with statewide membership arms, has announced eight additions ... have three-year terms and will join a board that ... business technology community. Electees include four technology organization leaders: ...
Cached Biology Technology:FDA approves advanced digital mammography system 2Interview: Dr. William Yasnoff on health records, part 2 2Interview: Dr. William Yasnoff on health records, part 2 3Interview: Dr. William Yasnoff on health records, part 2 4Interview: Dr. William Yasnoff on health records, part 2 5Interview: Dr. William Yasnoff on health records, part 2 6
... short years since publication of the best-selling ... acclaimed Protein Protocols Handbook, there have been ... In recognition of the level of attention ... of new methodologies directed to study them, ...
... Gene silencing experiments often call for ... NeoFX Transfection Agent refines siRNA transfection ... NeoFXs lipid-based formulation can be used ... they are subcultured without increased ...
... is a new-generation siRNA transfection reagent that ... 1 nM siRNA in a wide variety ... cell viability. Using low siRNA concentrations avoids ... when transfecting siRNA at higher concentrations, thereby ...
... for high efficiency siRNA delivery ... reagent proven to work effectively ... cell types. Results in silencing ... target gene expression. One step, ...
Biology Products: