Navigation Links
Details of ancient shark attack preserved in fossil whale bone
Date:11/10/2011

A fragment of whale rib found in a North Carolina strip mine is offering scientists a rare glimpse at the interactions between prehistoric sharks and whales some 3- to 4-million years ago during the Pliocene.

Three tooth marks on the rib indicate the whale was once severely bitten by a strong-jawed animal. Judging by the 6 centimeter spacing between tooth marks, scientists believe the attacker was a mega toothed shark Carcharocles megalodon, or perhaps another species of large shark which was alive at that time. The whale appears to have been an ancestor of a great blue or humpback.

"One certainly doesn't expect to find evidence of animal behavior preserved in the fossil record, but this fossil shows just that, a failed predation," explains Stephen Godfrey, paleontologist at the Calvert Marine Museum in Solomons, Md. and a Smithsonian research collaborator, who discovered the fossil. "The shark may have gone away with a mouthful, but it didn't kill the whale"

Scientists know the whale survived because "most of the fossil fragment is covered with a type of bone known as woven bone, which forms rapidly in response to localized infection," explains Don Ortner, an anthropologist at the Smithsonian's National Museum of Natural History and authority on the effect of disorders on skeletal tissue. "Biomechanically woven bone is not very strong. The body eventually remodels it into compact bone, but it takes time." CT scans reveal evidence of inflammation in the bone marrow consistent with infection.

The presence of the woven bone indicates the healing was incomplete and the whale died, the scientists estimate, between two and 6 weeks after the attack. The whale's death may have been unrelated to its infection and injury, Ortner says. "We don't know why it died."

Based on the curvature of the shark's jaw, as indicated by the arc of the impressions of its teeth, the scientists believe the shark was relatively small
'/>"/>

Contact: Brian Ireley
ireleyb@si.edu
Smithsonian
Source:Eurekalert  

Page: 1 2

Related biology news :

1. ORNL neutrons, simulations reveal details of bioenergy barrier
2. BGI releases a complete de novo E. coli O104 genome and details of their detection kit
3. What is a laboratory mouse? Jackson, UNC researchers reveal the details
4. Study details path to sustainable aviation biofuels industry in Northwest
5. Imaging technology reveals intricate details of 49-million-year-old spider
6. Polarized microscopy technique shows new details of how proteins are arranged
7. Scripps Research team discovers new details about medically important protein family
8. Book details viability of wood to energy market in southern wildland-urban interface areas
9. Research into chromosome replication reveals details of heredity dynamics
10. Fruit fly study digs deeper into poorly understood details of forming embryos
11. Scientists unravel more details of plant cell-wall construction
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Details of ancient shark attack preserved in fossil whale bone
(Date:8/27/2014)... based upon a proxy for impact have been identified ... approach to scientific research. , The researchers from the ... top 100 pathogens affecting humans and the top 100 ... will help governments across the continent plan for risks ... a result of climate change, and for biosecurity. , ...
(Date:8/27/2014)... disease that exists as five strains, none of which ... is the Sudan ebolavirus (SUDV). Although not the strain ... even as recently as 2012. In a new study ... researchers now report a possible therapy that could someday ... Sachdev Sidhu, Jonathan Lai and colleagues explain that about ...
(Date:8/27/2014)... that health advocates, campaigns against trans-fats have largely ... they,re taking aim at sugar for its potential ... policymakers are still wrangling over the best way ... to an article in Chemical & Engineering ... the American Chemical Society. , In the article, ...
Breaking Biology News(10 mins):Big data approach identifies Europe's most dangerous human and domestic animal pathogens 2Potential therapy for the Sudan strain of Ebola could help contain some future outbreaks 2
... How much do we, who are alive today, differ ... who lived in Europe and parts of Asia and went ... Neandertals, in turn, have in common with the ape-ancestors from ... both hominids, the fossil record told us long ago that ...
... from the University Hospitals of Geneva and Lausanne have shown ... mass and poor bone architecture compared to healthy people of ... Inflammatory bowel disease is a general term referring ... of the most common disorders are Crohn,s disease and ulcerative ...
... Mo. When muscle tissue experiences trauma or ... the muscle known as "satellite cells" respond to ... particularly important in neuromuscular diseases, such as muscular ... University of Missouri researchers have used time-lapse photography ...
Cached Biology News:CSHL team helps Neandertal Genome Project compare differences between Neandertals and modern humans 2CSHL team helps Neandertal Genome Project compare differences between Neandertals and modern humans 3CSHL team helps Neandertal Genome Project compare differences between Neandertals and modern humans 4Caught on tape: Muscle stem cells captured on video by MU researcher 2
(Date:8/27/2014)... Varian Medical Systems today broke ground ... Lake City manufacturing facility and allow for the consolidation ... create 1,000 new full time jobs in the state ... home to hardworking people with immense engineering and technical ... success in the manufacturing of our state-of-the-art X-ray technology,” ...
(Date:8/27/2014)... YORK , Aug. 27, 2014 /PRNewswire/ ... research report is available in its catalogue: ... 2014-2018 http://www.reportlinker.com/p02316661/Global-Biodegradable-Packaging-Materials-Market-2014-2018.html ... materials are materials that are readily decomposed ... differs from conventional non-degradable packaging in terms ...
(Date:8/27/2014)... , Aug. 27, 2014 Reportlinker.com announces ... in its catalogue: Global Chelating Agents ... About Chelating Agent A chelating agent ... bonds with metal ions, thereby forming a metal-ion ... metal-ions have on chemical processes, formulations, and the ...
(Date:8/27/2014)... “We are honored to be named ... Thangaraj, CEO of Radiant Sage. “We are offering truly ... imaging corelab market to a different level. We ... to efficiently and effectively manage the massive amounts of ... analyzed and read by trained physicians. Being recognized by ...
Breaking Biology Technology:Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 2Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 3Global Biodegradable Packaging Materials Market 2014-2018 2Global Biodegradable Packaging Materials Market 2014-2018 3Global Biodegradable Packaging Materials Market 2014-2018 4Global Biodegradable Packaging Materials Market 2014-2018 5Global Biodegradable Packaging Materials Market 2014-2018 6Global Biodegradable Packaging Materials Market 2014-2018 7Global Chelating Agents Market 2014-2018 2Global Chelating Agents Market 2014-2018 3Global Chelating Agents Market 2014-2018 4Radiant Sage Named to CIOReview List of 100 Most Promising Technology Companies 2
... ... array of guest speakers, everything sales and marketing professionals will need to pass ... social media, pipeline acceleration, inside sales, optimizing organizational structure and solutions-driven corporate/channel marketing ... , ...
... ... Excellence In The International Marketplace. , ... (PRWEB) March 24, 2010 -- Sterlitech Corporation, one of the world’s ... of the prestigious Faces of Trade® Award presented by the US Chamber of Commerce. ...
... Mass. -- Promising research on superconducting materials, near infra-red ... University,s School of Engineering early career awards from the ... awards are among the most prestigious honors given by ... the early stages of their careers, when many do ...
Cached Biology Technology:Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 2Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 3Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 4US Chamber Of Commerce Honors Sterlitech Corporation 23 Tufts engineering faculty earn prestigious national awards for promising research 23 Tufts engineering faculty earn prestigious national awards for promising research 3
Mouse monoclonal [ICRF 44] to Integrin alpha M...
CKB Antibody (N-term) Antigen: This antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide selected within aa 1~100 of human CKB. Molecular Weight: 42644 Da...
384 Cluster Tube Racks...
Leptin Receptor Polyclonal Ab 100 ug purified rabbit anti-mouse Leptin Receptor. Tested in Western blotting....
Biology Products: