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Coelacanth

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Coelacanth

Post by sujin007 on Sun Nov 18, 2012 8:48 pm

Coelacanth is the common name for an order of fish that includes the oldest living lineage of jawed fish known to date. Coelacanths first appear in the fossil record in the Middle Devonian, about 410 million years ago.

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Re: Coelacanth

Post by sujin007 on Sun Nov 18, 2012 8:50 pm

The coelacanths, which are related to lungfishes and tetrapods, were believed to have been extinct since the end of the Cretaceous period, until the first specimen was found off the east coast of South Africa, off the Chalumna River in 1938.


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Re: Coelacanth

Post by sujin007 on Sun Nov 18, 2012 8:51 pm

Coelacanths are lobe-finned fish with the pectoral and anal fins on fleshy stalks supported by bones, and the tail or caudal fin diphycercal ,divided into three lobes, the middle one of which also includes a continuation of the notochord.
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