Navigation Links
Great White shark evolution debate involves WSU Lake Campus geology professor

A significant debate is currently underway in the scientific community over the evolution of the Great White shark, and Chuck Ciampaglio, Ph.D., an assistant professor of geology at the Wright State University Lake Campus, is right in the middle of it.

The issue is if the Great White, one of the most feared predators of the sea, evolved from the huge prehistoric megladon shark or if its ancestry rests with the mako shark.

"Most scientists would probably say the Great Whites evolved from the megladon line, which existed from two million to twenty million years ago. They were huge sharks, approximately the length of a Greyhound bus and possessing teeth that were up to six inches long," explains Ciampaglio. "However, our research, which is based on analyzing fossils of several hundred shark teeth, shows that the Great White shares more similarities with the mako shark." He added that because sharks regularly replace their teeth, it is relatively easy to obtain tooth samples through fossil field work along the Atlantic seaboard.

Ciampaglio acknowledges that people seem to have a fascination with sharks. "The general public seems to like sharks, and maybe this is because they bring out the fears of our childhood, when they were perceived as scary monsters," he explained.

His interest in sharks is apparent when entering his office. The door and walls have pictures of shark teeth, and there are posted references to fossils and a geological time table.

The research scientist makes imprints of the teeth, then digitizes the picture to establish grids of different combinations that are analyzed by a sophisticated computer program. He even uses an electron microscope to view different serration designs of shark teeth.

"Our analysis of their teeth shows that Great White and mako sharks have very similar tooth growth trajectories, while those of the great white and megladon are not similar. Analysis of both the root and entire tooth
'"/>

Source:Wright State University


Page: 1 2

Related biology news :

1. Aggressive aquatic species invading Great Lakes
2. Low oxygen likely made Great Dying worse, greatly delayed recovery
3. HIV Therapy Greatly Extends Life of Key T Cells, Scientists Find
4. Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified
5. Great (taste) expectations: Study shows brain anticipates taste, shifts gears
6. UNH researcher restoring oyster reefs to Great Bay
7. CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes
8. National Academies advisory: Invasive aquatic species in the Great Lakes
9. White blood cell waste disposal system plays critical regulatory role
10. White Blood Cell Waste Disposal System Plays Critical Regulatory Role
11. White blood cells of cancer-resistant mice overwhelm natural defenses of cancer cells
Post Your Comments:
(Date:7/24/2014)... sake brewery has its own microbial terroir, meaning the ... those found in the product, creating the final flavor ... journal Applied and Environmental Microbiology . This is ... of a sake brewery. , Many sake makers ... David A. Mills of the University of California, Davis, ...
(Date:7/24/2014)... similar counterparts in humans, affect the connections between nerve ... the hippocampus, an area of the brain that plays ... of memories. The results of the study have been ... function depends on the active communication between nerve cells, ... together into a dense network where they constantly relay ...
(Date:7/24/2014)... researchers and patients have hoped that embryonic stem cells ... bodycould provide insight into numerous diseases perhaps even be ... by the inability to transfer research and tools from ... because human ESCs are "primed" and slightly less plastic ... Powell, and Haoyi Wang, who are scientists in the ...
Breaking Biology News(10 mins):The microbes make the sake brewery 2A protein couple controls flow of information into the brain's memory center 2A protein couple controls flow of information into the brain's memory center 3A protein couple controls flow of information into the brain's memory center 4Whitehead Institute researchers create 'naïve' pluripotent human embryonic stem cells 2
... HOBOKEN, N.J. Stevens Institute of Technology,s Center for ... Warning System (EWS) for Inundations in the Dominican Republic. ... DR,s EWS and providing the most up-to-date equipment to ... on the island. , The genesis of the EWS ...
... Wistar Institute and their colleagues have identified, for the first ... of RNA that play a vital role in gene expression ... way to the development of a new generation of cancer ... that blocks the pathway of a particular miRNA, called miR-21, ...
... September 23, 2008 Researchers at Sentara ... explore the safety and effectiveness of stents to open ... Pulmonary Disease (COPD). The EASE (Exhale Airway ... investigational technique without surgery to create new pathways to ...
Cached Biology News:Stevens strengthens Dominican Republic's Early Warning System for Inundations 2Stevens strengthens Dominican Republic's Early Warning System for Inundations 3Scientists identify novel inhibitor of human microRNA 2Scientists identify novel inhibitor of human microRNA 3Sentara begins international trial -- open at only 24 US locations 2
(Date:7/24/2014)... Francisco, CA (PRWEB) July 24, 2014 ... http://www.draperuniversity.com , is proud to announce that ... from 17 different countries will converge on the ... Valley for an intensive, experiential program focused on ... The highly selective school, currently running its sixth ...
(Date:7/24/2014)... (PRWEB) July 24, 2014 The ... of molecular diagnostic test results. It also enables ... for the validation and reporting of high profile ... diagnostics is a rapidly growing area of biotechnology ... genetic predisposition, cancer, and companion diagnostics in personalized ...
(Date:7/23/2014)... strides in saving China,s endangered national treasure, the giant ... panda reserves that have been established and three large ... remain in the wild. , Breeding programs in ... by improving genetic diversity, avoid inbreeding and ultimately, introduce ... high-profile programs doing so far? , In a new ...
(Date:7/23/2014)... 23, 2014  AuraSense Therapeutics, the pioneer in developing ... regulatory and immunotherapeutic agents, announced today that ... Therapeutics, executive leadership team as chief financial ... to joining AuraSense Therapeutics, Mr. Snyder was ... of Cellular Dynamics International Inc., where he ...
Breaking Biology Technology:Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 3New DNA-barcode Patent Virtually Eliminates False Test Results and Sample Mix-up 2AuraSense Therapeutics Appoints Biotechnology Veteran David S. Snyder as Chief Financial Officer 2
... and development will dominate a surge in demand for ... study released this week by a New York consulting ... Lux Research , also projected that sales of ... years. , ,"Interest in nanotechnology focuses on remarkable applications ...
... Fiserv, Inc. and CUNA Mutual Group ... of CUNA Mutual's payment protection products during ... solutions offered by Fiserv business units. The ... protection products, which include credit life, credit disability and ...
... Source: Visions 2005 Madison, Wis. - ... of postage stamp size videos of staid corporate meetings, running ... of the seafloor? , ,Audiences will have the opportunity to ... The Sea" event, hosted locally by the UW-Madison Division ...
Cached Biology Technology:Corporate clients will dominate surge in nanotech tool demand, study projects 2Corporate clients will dominate surge in nanotech tool demand, study projects 3Deep sea event will put spotlight on Internet 2 capabilities 2
Human VASA Biotinylated Affinity Purified PAb...
[14C]Polyethylene glycol 4000, 9.25 MBq, 250 uCi. Aqueous solution containing 3% ethanol, sterilized. 370-740 MBq/g, 10-20 mCi/g.1.85 MBq/ml, 50 uCi/ml. Category: Radiochemicals &Radiation Safety, ...
... kit for all types of yeast two-hybrid studies, including ... Choice of two bait vectors for ... Triple reporter strain ... Complete set of controls: pLexA-p53, ...
Mouse Limitin MAb (Clone 183727)...
Biology Products: