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Post Info TOPIC: Coelacanth


L

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Ancient coelacanth nursery

Various specimens of Africas earliest coelacanth have been found in a 360 million year-old fossil estuary near Grahamstown, in South Africas Eastern Cape.
More than 30 complete specimens of the new fossil species, Serenichthys kowiensis, were collected from the famous Late Devonian aged Waterloo Farm locality, by palaeontologist Dr Robert Gess and described by him in collaboration with Professor Michael Coates of the University of Chicago.

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Lungs found in mysterious deep-sea fish

A deep-water fish found mostly off the coast of southern Africa has been found to have non-functional lungs, according to a study published Tuesday in Nature Communications.
Latimeria chalumnae is no ordinary fish. Besides possessing vestigial lungs, the species is frequently called a living fossil for being part of the order coelacanth, which was long thought extinct.

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Mission to study 'living fossil'

Researchers embark on a mission to dive in deep sea caves of South Africa in search of the coelacanth, a fish that has existed for nearly 400 million years.
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The first coelacanth was discovered on December 23, 1938

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100 million-year-old coelacanth discovered in Texas is new fish species from Cretaceous

A new species of coelacanth fish has been discovered in Texas.
Pieces of tiny fossil skull found in Fort Worth have been identified as 100 million-year-old coelacanth bones, according to palaeontologist John F. Graf, Southern Methodist University, Dallas.
The coelacanth has one of the longest lineages - 400 million years - of any animal. It is the fish most closely related to vertebrates, including humans.

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  Old fish makes new splash

Coelacanths, an ancient group of fishes that were once thought to exist only in fossils, made headlines in 1938 when one of their modern relatives was pulled alive from the ocean. Now coelacanths are making another splash - and University of Alberta researchers are responsible for the discovery.
Lead U of A researcher Andrew Wendruff identified coelacanth fossils that he says are so dramatically different from previous finds, they shatter the theory that coelacanth evolution was stagnant in that their body shape and lifestyle changed little since the origin of the group.
Wendruff says his one-metre-long, fork-tailed coelacanth was one of an "offshoot" lineage that lived 240 million years ago. It falls between the earliest coelacanth fossils dating back 410 million years and the latest fossils dated about 75 million years ago, near the end of the age of dinosaurs.

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Coelacanth
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The coelacanths, which are related to lungfishes and tetrapods, were believed to have been extinct since the end of the Cretaceous period. More closely related to tetrapods than even the ray-finned fish, coelacanths were considered the "missing link" between the fish and the tetrapods until the first Latimeria specimen was found off the east coast of South Africa, off the Chalumna River (now Tyalomnqa) in 1938. Museum curator Marjorie Courtenay-Latimer discovered the fish among the catch of a local fisher, Captain Hendrick Goosen, on December 23, 1938.
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