Navigation Links
'Banana-jawed' fossil mammal linked to rare sound-producing skill

what purpose did those weird jaws serve?

According to Simons, today's hyraxes are relics of a time when Africa lacked most of the kinds of animals found there today. Current scientific thought holds that most modern mammal groups diversified and became larger only after a giant asteroid killed off the dinosaurs 65 million years ago.

Numerous ecological niches vacated by the annihilated dinosaurs were waiting to be filled. One group of creatures, called the Afrotheres -- "Beasts from Africa" -- seized the opportunity. It was from this group, Simons said, that today's hyraxes descended.

The Afrotheres, whose descendents include elephants and aardvarks as well as hyraxes, diversified into various niches and ultimately became Africa's dominant land animals.

As hyraxes diversified, the development in Thyrohyrax of a curved, swollen jaw containing a hollow chamber represented a particularly strange adaptation, DeBlieux said. Some other hyracoid species also showed a similar adaptation, but the skeletal trait was most pronounced in Thyrohyrax, he added.

"Our team had long speculated on the cavity's purpose, " Simons said. "One idea we proposed, for example, was that the chamber contained enlarged salivary glands.

"Our current findings narrow down the possibilities," he said. "Among the most plausible explanations is that the hollow jaw was a sound-producing device." The animals, he added, may have used the chamber to produce sounds as part of their courtship or mating displays.

According to DeBlieux, help in refining explanations behind this mammal's unusual jaw may come from studying dinosaur models. In particular, he said, a number of museums have built models of dinosaur sound-producing skeletal cavities that have enabled scientists to reconstruct the possible sounds made by them.

Now, DeBlieux would like to do the same for the fossil hyrax. "It would be really neat," he said, "to model their jaws so we cou
'"/>

Source:Duke University


Page: 1 2 3 4

Related biology news :

1. Scientists find fossil proof of Egypts ancient climate
2. Oldest fossil human protein ever sequenced
3. Oldest cranial, dental and postcranial fossils of early modern European humans confirmed
4. Researchers find new giant amphibian fossils in Africa
5. Molecular fossils uncover link between viruses and the immune system
6. Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils
7. Spider blood found in 20 million year old fossil
8. Space matters: Estimating species diversity in the fossil record
9. Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils
10. Missing fossil link Dallasaurus found
11. Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Banana jawed fossil mammal linked rare sound producing skill

(Date:10/18/2014)... 2,000 patients referred for evaluation of suspected genetic ... for 25 percent, including detection of a number ... to disease, according to a study appearing in ... to coincide with the American Society of Human ... exons or coding regions of thousands of genes ...
(Date:10/17/2014)... knowledge regarding Ebola is critical and pertinent for practicing ... global outbreak and epidemic. The Journal, Disaster Medicine ... issue, Ebola Virus and Public Health, to surround the ... this critical societal moment. , On October 17, ... Clinicians . The primer was prepared by Dr. Eric ...
(Date:10/17/2014)... of Copenhagen have shown for the first time how ... fibrosis patients, giving them the opportunity to get tremendous ... , The study also discovered the bacterial growth in ... halted or slowed down by the immune cells. The ... and helped "suffocate" the bacteria, forcing the bacteria to ...
Breaking Biology News(10 mins):Whole-exome sequencing shows potential as diagnostic tool 2Scientists opens black box on bacterial growth in cystic fibrosis lung infection 2
... MADISON, WI, MARCH 1, 2011 Methane ... permafrost, termites, oceans, freshwater bodies, non-wetland soils, are all ... methane presence ca n be accredited to human-related activities. ... burning, waste management and animal husbandry. The release of ...
... available in Spanish . , Those who ... and teas may tend to overlook the benefits of drinking ... Agricultural Research magazine, the idea that herbal teas may provide ... U.S. Department of Agriculture (USDA)-funded scientists in Boston, Mass., ...
... release is available in Spanish . ... (UPV/EHU), has developed genetic-molecular tools, with the intention of completing ... equine breeds in the Basque Country Autonomous Community (CAPVEAE) and ... DNA sequence) and certain SNPs (a kind of variation in ...
Cached Biology News:Measuring methane 2Don't underestimate the power of herbal teas 2Basque thesis investigates wide diversity within certain ovine, bovine and equine breeds 2Basque thesis investigates wide diversity within certain ovine, bovine and equine breeds 3
(Date:10/22/2014)... (PRWEB) October 22, 2014 Physicians ... its cardiovascular pharmacogenetics menu, which enables healthcare providers ... With PCLS’s evidence-based results, healthcare providers are ... optimize their therapy, while minimizing risks for adverse ... U.S., according to the FDA [1] more than ...
(Date:10/22/2014)... VANCOUVER , Oct. 22, 2014 /PRNewswire/ - iCo ... ICOTF), today announced next steps for its Oral ... findings from its in vitro work ... therapy.  iCo now plans to complete pre clinical ... an initial Phase 1A clinical trial, utilizing approximately ...
(Date:10/22/2014)... and HONG KONG , Oct. ... disease therapeutics enterprise, announced today that rare disease expert ... as vice president, research. Dr. McKew brings more than ... leadership positions at the National Institutes of Health, Wyeth ... by Wyeth). Dr. McKew will lead aTyr,s efforts to expand ...
(Date:10/20/2014)... October 20, 2014 Convey Computer ... a team from Iowa State University won first place ... Using a Convey HC-2ex, the team’s solution achieved the ... faster than the second place finisher. , Experts from ... upon the month long challenge, using a variety of ...
Breaking Biology Technology:PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 3iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 2iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 3aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3
... Phosphatase useful for dephosphorylation serine,threonine or tyrosine ... Mary Ellen Simcox ,Stratagene Cloning Systems, Inc. ... dualspecificity protein,phosphatase that has been produced as ... calmodulinbinding peptide. The tag simplifies purification of ...
... polymerase delivers high fidelity and great,performance ... Holly Hogrefe ,Stratagene , Stratagene has ... novel enzyme formulation that provides,superior performance in ... that Herculase enhanced DNA polymerase is even ...
... Generate cDNA libraries with as little as 50 ng ... Tanya Hosfield ,Marie Callahan ,John C. Bauer Mike ... Lenhart Paul Young ,Human Genome Sciences, Rockville, Maryland , ... new method to generate high-efficiency cDNA libraries in a plasmid,vector. ...
Cached Biology Technology:Highly Active and Removable AffinityTagged Lambda Phosphatase 2Highly Active and Removable AffinityTagged Lambda Phosphatase 3Highly Active and Removable AffinityTagged Lambda Phosphatase 4Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 2Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 3Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 4Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 5Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 6Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 7Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 8Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 9Unique DNA Polymerase Formulation Excels in a Broad Range of PCR,Applications 10Constructing Directional cDNA Libraries from Limited Amounts of RNA 2Constructing Directional cDNA Libraries from Limited Amounts of RNA 3Constructing Directional cDNA Libraries from Limited Amounts of RNA 4Constructing Directional cDNA Libraries from Limited Amounts of RNA 5Constructing Directional cDNA Libraries from Limited Amounts of RNA 6Constructing Directional cDNA Libraries from Limited Amounts of RNA 7
MOUSE ANTI HUMAN NPM...
MOUSE ANTI PROTEIN KINASE C BETA 2 Immunogen: Protein kinase C beta 2...
Antibodies were affinity purified using epitopes specific to JLP immobilized on solid support....
... et.al. (1997) • Contains short ... biochemistry & molecular biology, arranged ... Entries give details of biochemical ... which they are involved and ...
Biology Products: