Navigation Links
New coelacanth find rewrites history of the ancient fish
Date:5/3/2012

(Edmonton) Coelacanths, an ancient group of fishes once thought to be long extinct, made headlines in 1938 when one of their modern relatives was caught off the coast of South Africa. Now coelacanths are making another splash and University of Alberta researchers are responsible.

Lead U of A researcher Andrew Wendruff identified fossils of a coelacanth that he says are so dramatically different from previous finds, they shatter the theory that coelacanths were evolutionarily stagnant in that their body shape and life-style changed little since the origin of the group.

Wendruff says his one-metre-long, forked tailed coelacanth was an 'off-shoot' lineage that lived 240 million years ago. It falls between the earliest coelacanth fossils of 410 million years ago and the latest fossils dated about 75 million years ago, near the end of the age of dinosaurs.

"Our coelacanth had a forked tail, indicating it was a fast-moving, aggressive predator, which is very different from the shape and movement of all other coelacanths in the fossil record," said Wendruff.

Wendruff's research co-author, U of A Professor Emeritus Mark Wilson, describes typical coelacanths as having chunky bodies, fins of varying size and broad, flexible tails. "These fish were slow moving and probably lay in wait for their prey," said Wilson.

Wendruff's coelacanth is named Rebellatrix, which means rebel coelacanth. The researchers say Rebellatrix came along after the end-Permian mass extinction 250 million years ago, an event so lethal it wiped out 90 per cent of marine life. Rebellatrix filled a previously unoccupied predator niche, but it didn't fare well.

"Rebellatrix was likely a spectacular failure in the evolution of cruising predation," said Wendruff. "Clearly some other fish groups with forked-tails must have outperformed this coelacanth as it does not appear later in the fossil record."

The fossils of R
'/>"/>

Contact: Brian Murphy
brian.murphy@ualberta.ca
780-492-6041
University of Alberta
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study rewrites the evolutionary history of C4 grasses
2. Extinct moa rewrites New Zealands history
3. Earth history and evolution
4. Family history of liver cancer increases risk of developing the disease
5. Scientists trace evolutionary history of what mammals eat
6. Hidden in plain sight, concrete holds a strange history
7. Nobel history illustrates gap in grants to young scientists
8. What makes rainforests unique? History, not ecology
9. Using human genomes to illuminate the mysteries of early human history
10. Mouse genome sequences reveal variability, complex evolutionary history
11. Sea smarts: Scientists reconstruct evolutionary history of mollusks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/27/2015)... 27, 2015  For more than four decades, AUVSI,s ... been the premier worldwide event for the unmanned land, ... must-attend event for any local, national, or trade news ... commercial markets and current applications of unmanned technologies. The ... projected $48 billion industry, and how it will soon ...
(Date:4/27/2015)... Apr. 27, 2015 Profile Solutions, Inc. (OTC: ... security systems is pleased to announce that Dr ... consultant and member of its scientific advisory board. ... as a thought leader in technology-enhanced learning models. He ... and has published studies and books focused on online ...
(Date:4/20/2015)... Huntington Memorial Hospital is the first facility ... miniaturized, wireless monitoring sensor to manage heart failure (HF). ... FDA-approved heart failure monitoring device that has been proven ... to manage heart failure. The CardioMEMS HF ... pulmonary artery (PA) during a non-surgical procedure to directly ...
Breaking Biology News(10 mins):UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3
... Texas at Arlington environmental engineer has received a three-year, $561,730 ... water so that water providers can take action to contain ... and National Science Foundation have awarded Assistant Professor Hyeok Choi ... these biological toxins exist so that the harmful algae can ...
... Microbes from the human mouth are telling Oak Ridge ... they cracked the genetic code of bacteria linked to ... of the National Academy of Sciences , profiles the ... environments, ranging from the mouth to deep within the ...
... One of the most widely advocated strategies for dealing with ... the population of men who have sex with men (MSM) ... new study. In the United States, LA County has ... so-called "test and treat" policy which calls for universal ...
Cached Biology News:UT Arlington engineer to search for bad algal blooms 2Human microbe study provides insight into health, disease 2Study: Widespread 'test-and-treat' HIV policies could increase dangerous drug resistance 2
(Date:5/21/2015)... May 21, 2015 /PRNewswire/ - RepliCel Life Sciences ... regenerative medicine company focused on the development of ... presentation at the International Society for Cellular Therapy ... Achilles tendinosis currently in a Phase 1/2 clinical ... th from 5:30 PM to 7:00 PM ...
(Date:5/20/2015)... , May 20, 2015 Veracyte, ... preliminary data demonstrating the ability of the company,s ... (IPF) from other interstitial lung diseases (ILDs) using ... classifier,s potential to help thousands of patients avoid ... in IPF diagnosis – a frequent challenge for ...
(Date:5/20/2015)... Research and Markets ( http://www.researchandmarkets.com/research/qfxkcq/global_cell ) ... Therapy Market Outlook 2020 " report to their ... and regenerative medicine is expected to have huge marketing ... help in the growth of deregulated organs. Several therapeutic ... unable to form new tissue or sometimes organ transplant ...
(Date:5/20/2015)...  Health eCareers, the healthcare industry,s online career ... seekers looking for the flexibility of short-term assignments ... online tool dedicated exclusively to temporary and shift ... enables employers to quickly find and hire experienced ... and other temporary positions, eliminating the time and ...
Breaking Biology Technology:RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 3Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 2Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 3Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 4Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 5Global Cell Therapy Market Outlook 2015-2020 - 262 Cell Therapies & 13 Marketed Cell Therapies 2Global Cell Therapy Market Outlook 2015-2020 - 262 Cell Therapies & 13 Marketed Cell Therapies 3Health eCareers Launches SHIFT Mobile and Online Tool to Match Healthcare Employers with Temporary Job Seekers 2Health eCareers Launches SHIFT Mobile and Online Tool to Match Healthcare Employers with Temporary Job Seekers 3
... of top-quality custom cosmesis, hires U.S. ... sales and marketing executive, ... - Touch,Bionics, developer of the i-LIMB Hand, the world,s first ... complete operations of LIVINGSKIN, the developer of the unique,and lifelike ...
... California, San Diego electrical engineers have created experimental ... to highly efficient thin-film solar cells of the ... as electron superhighways that carry electrons kicked loose ... electron-attracting electrode and this scenario could boost ...
... for micro and nano technologies. These challenges are not ... control and understanding of their behaviour. , This one-day ... analysis at the micro and nano-scale using state-of-the art ... , Topics include fundamental effects of topography in SIMS ...
Cached Biology Technology:Touch Bionics acquires LIVINGSKIN 2Touch Bionics acquires LIVINGSKIN 3Nanowires may boost solar cell efficiency, UC San Diego engineers say 2Nanowires may boost solar cell efficiency, UC San Diego engineers say 3Nanowires may boost solar cell efficiency, UC San Diego engineers say 4Micro and Nano Scale Characterization of Fibers 2
...
Dopamine D2 and D3 receptor, human and possibly mouse. AB1502 detects 40 ng of dopamine receptor peptide by ELISA. AB1502 is not neutralizing....
Rabbit polyclonal to SpUlp2 ( Abpromise for all tested applications). Antigen: Synthetic peptide: SNNERQSLSSGSND, corresponding to amino acids 622-635 of Schizosaccharomyces pombe SpUlp2...
STX18 Immunogen: STX18 (NP_058626, 101 a.a. ~ 200 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Biology Products: