Thursday 3 May 2012

Scientists Uncover Ancient Killer Coelacanth

Canadian Scientists Uncover Ancient Killer Coelacanth; 'Overturns The Age Old Image Of Coelacanths'
by News Service

DEERFIELD, Illinois -- Coelacanths are iconic fishes, well-known as 'living fossils.' The group was thought to have died out with the dinosaurs until a living one was caught in 1938 off the coast of South Africa, sending shock waves through the scientific world. More than 70 years later, a new extinct coelacanth is causing more waves in the scientific community because it had a tuna-like forked tail and was probably a fast-moving, shark-like predator. This contrasts with living coelacanths, which are slow-moving fishes with peculiar broad tails bearing 3 lobes. The most complete fossils of this stunning 240 million-year-old species were found by collectors from the Peace Region Palaeontology Research Centre in Tumbler Ridge, British Columbia, and are described by two University of Alberta scientists in the most recent issue of Journal of Vertebrate Paleontology.
The new form, named Rebellatrix, meaning the 'rebel coelacanth' was a 3-foot long fish with a massive symmetrical forked tail quite unlike the tails of any other living or fossil coelacanths. The structure of this new fish is so unusual that it has been put in its own family. The fossils were discovered on rocky slopes in the Hart Ranges of Wapiti Lake Provincial Park, British Columbia, which at the time the fish was alive was off the western coast of the supercontinent Pangaea.

No comments: