Navigation Links
Details of evolutionary transition from fish to land animals revealed
Date:10/15/2008

veal the pattern of evolutionary change in this part of the skeleton," said Downs. "We see that cranial features once associated with land-living animals were in fact the first adaptations for life in shallow water."

"The gradual evolutionary transition from fish to tetrapod, and the transition from aquatic to terrestrial lifestyles required much more than the evolution of limbs," said Daeschler. "The head of these animals was becoming more solidly constructed and, at the same time, more mobile with respect to the body across this transition."

Trends in head shape include a flattening of the skull and a lengthening of the snout.

Using several well-preserved specimens of Tiktaalik roseae, the research helps document the relative timing of the particular skeletal changes associated with changes in head shape.

"We used to think of this transition of the neck and skull as a rapid event, largely because we lacked information about the intermediate animals," said Neil Shubin of the University of Chicago, who co-led the team that discovered Tiktaalik roseae. "Tiktaalik neatly fills this morphological gap, and helps to resolve the timing of this complex transition."

During this transition, interactions among the different parts of the head skeleton also were changing.

"Fish in deep water move and feed in three-dimensional space, and can easily orient their bodies in the direction of their prey," said Farish Jenkins, Jr., an evolutionary biologist at Harvard University and co-author of the paper. "A mobile neck is advantageous in settings where the body is relatively fixed, as is the case in shallow water and on land."


'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Study reveals surprising details of the evolution of protein translation
2. Researchers uncover details about how dietary restriction slows down aging
3. Biochemists reveal details of mysterious bacterial microcompartments
4. Revealing the evolutionary history of threatened sea turtles
5. Illuminating biology: An evolutionary perspective
6. Milkweeds evolutionary approach to caterpillars: Counter appetite with fast repair
7. Revolutionary chefs? Not likely, shows physics research
8. Crossed (evolutionary) signals?
9. Mechanism and function of humor identified by new evolutionary theory
10. Revolutionary CO2 maps zoom in on greenhouse gas sources
11. M2SYS Introduces Revolutionary Biometric Artificial Intelligence Technology to Significantly Reduce Fingerprint Software False Reject Rates
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Details of evolutionary transition from fish to land animals revealed
(Date:12/15/2014)... , Dec. 12, 2014 Research and Markets ... addition of the "Global Facial Recognition Market ... http://photos.prnewswire.com/prnh/20130307/600769 Facial ... of individuals. Facial recognition system measures the overall ... jaw edges, mouth, and the distance between eyes. ...
(Date:12/11/2014)... , Dec. 10, 2014  Data Sciences International ... has released a new series of digital telemetry ... toxicology researchers. M series, part of the PhysioTel™ ... the best possible physiologic data when incorporating functional ... functional endpoints to toxicology studies has evolved from ...
(Date:12/10/2014)... 2014 CIE San Diego has launched an ... connective tissue that enhances care coordination among social service ... client-level information; earned a second $1 million grant from ... seniors aging in community and; will be recognized as ... th 4-6p. CIE San Diego today ...
Breaking Biology News(10 mins):Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3New telemetry implants expected to change how large animal toxicology studies are conducted 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4
... has profound implications for where evangelicals fit into the ... Rice University and the University of Texas-Austin. "In ... Sen. Obama can shave off enough evangelical votes to ... one of the researchers. "That depends a great deal ...
... at the University of York have discovered a ,Chemical ... Hemisphere from the largely uncontaminated atmosphere of the Southern ... found evidence for an atmospheric chemical equator around 50 ... Their findings show for the first time that the ...
... genetic disorder called tuberous sclerosis complex (TSC) is yielding ... structural abnormalities in neurons, or brain cells. Researchers in ... led by Mustafa Sahin, MD, PhD, and Xi He, ... be restored. If this could be done ...
Cached Biology News:New study looks to define evangelicals and how they affect polling 2'Chemical equator' discovery will aid pollution mapping 2Rare genetic disorder gives clues to autism, epilepsy, mental retardation 2
(Date:12/24/2014)... December 23, 2014 ... is designed to introduce cutting edge communication ... and partners of platform upgrades. This webinar ... empowering users in their quest to leverage ... , According to SoundConnect’s Marketing Manager, Seanna ...
(Date:12/24/2014)... The report provides basic ... definition, classification, application and industry overview. This ... and product cost structure. Production is separated ... also covers upstream raw materials, equipment, downstream ... and proposals. In the end, the export ...
(Date:12/24/2014)... Pipette.com announces their Holiday in the ... their #HolidayInTheLab pictures for a chance to win pipette-themed ... those struggling to think of a holiday gift for ... Lab Contest provides the ideal holiday presents. The #HolidayInTheLab ... pictures of their chemistree, holiday sweaters, as well as ...
(Date:12/24/2014)... PharmaBoardroom,s new report, , Healthcare and ... free download , digs deep into this vibrant market, ... sector today. One area where Algeria ... a homegrown pharmaceutical manufacturing base, even if the government,s ambitious ... off. A cursory comparison with neighboring Morocco ...
Breaking Biology Technology:SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3
... VALENCIA, Calif., Nov. 20 MannKind,Corporation (Nasdaq: MNKD ... and cancer, announced today that it,will present at the ... AM ET at the Pierre Hotel in New York, ... the live web cast of the,presentation in the Investor ...
... Nov. 20 Sports and,nutritional product manufacturer, Natural ... announced today that it has,launched an international marketing ... Relief Cream. Made from a combination of,botanical and ... the internet and television. Natural Nutrition,s BLUE ...
... Nov. 20 /Xinhua-PRNewswire-FirstCall/ -- 3SBio Inc.,(Nasdaq: SSRX ... developing, manufacturing and marketing biopharmaceutical,products, announces today that ... the 19th Annual Piper Jaffray Health Care Conference ... November 27, 2007 at 4:30 P.M. EST. ...
Cached Biology Technology:Natural Nutrition Launches International Marketing Campaign for New All Natural Analgesic: BLUE LIGHTNING(TM) Fast Pain Relief 2
The improved design and new mechanical solutions of Finnpipette Focus Multichannel Plus improves accuracy and precision.In these low volume multichannel pipettes, the super blow-out function ensures ...
... Physical Form: buffered aqueous solution. ... terminal galactose from complex carbohydrates and glycoproteins. ... galactose under conditions where the pH must ... live cells. Unit Definition: ...
... is specific for human cardiac troponin subunit T, ... signals responsible for contraction of cardiac muscle. It ... in human cells. It also cross-reacts with human ... Antigen: Highly purified human cardiac troponin ...
cystatin A (N-18)...
Biology Products: