living fossil the story of the coelacanth

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Living Fossil The Story Of The Coelacanth

Author : Keith Stewart Thomson
ISBN : 9780393245356
Genre : Nature
File Size : 62. 15 MB
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"An engrossing tale of obsession, adventure and scientific reasoning." —Betty Ann Kevles, Los Angeles Times In the winter of 1938, a fishing boat by chance dragged from the Indian Ocean a fish thought extinct for 70 million years. It was a coelacanth, which thrived concurrently with dinosaurs and pterodactyls—an animal of major importance to those who study the history of vertebrate life. Living Fossil describes the life and habitat of the coelcanth and what scientists have learned about it during fifty years of research. It is an exciting and very human story, filled with ambitious and brilliant people, that reveals much about the practice of modern science.

Search For A Living Fossil

Author : Eleanor Clymer
ISBN : OCLC:1803093
Genre : Coelacanth
File Size : 61. 52 MB
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The Search Beneath The Sea

Author : J. L. B. Smith
ISBN : 9781787207943
Genre : Nature
File Size : 78. 93 MB
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ONE OF THE GREAT BOOKS OF SCIENTIFIC ADVENTURE...STRANGER THAN FICTION One of the most sensational discoveries in natural history, told by the ichthyologist who was directly involved in its first capture off the South African coast in 1938. Prior to this, the fish, although known to scientists, was thought to have become extinct at least fifty million years ago. There was much professional scepticism that it was indeed a coelacanth and Professor Smith had many battles ahead of him before proof could be found. A remarkable story.

A Fish Caught In Time

Author : Samantha Weinberg
ISBN : 9780060932855
Genre : Science
File Size : 30. 61 MB
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The coelacanth (see-lo-canth) is no ordinary fish. Five feet long, with luminescent eyes and limb like fins, this bizarre creature, presumed to be extinct, was discovered in 1938 by an amateur icthyologist who recognized it from fossils dating back 400 million years. The discovery was immediately dubbed the "greatest scientific find of the century," but the excitement that ensued was even more incredible. This is the entrancing story of that most rare and precious fish -- our own great-uncle forty million times removed.

Fossil Fish Found Alive

Author : Sally M. Walker
ISBN : 9781575055367
Genre : Juvenile Nonfiction
File Size : 40. 9 MB
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Describes the 1938 discovery of the coelacanth, a fish previously believed to be extinct, and subsequent research about it.

Old Four Legs

Author : Canadian Museum of Nature
ISBN : 0660000105
Genre : Nature
File Size : 66. 97 MB
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Author : Peter L.. Forey
ISBN : 0955074096
Genre : Coelaca
File Size : 45. 46 MB
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The purpose of this book is to give an account of the life and times of a single species of fish, Latimeria chalumnae- the coelacanth (or are there now two species?). Before the discovery of the modern Latimeria, relationships of the coelacanths were thought to lie with the rhipidistians, a group of fossil fishes that many think are tetrapod ancestors. Hence, by looking at the modern coelacanth and assuming conservatism we may be able to reconstruct the life of the 'missing link' between fishes and tetrapods. The coelacanth is the only living animal to retain some structuralcharacteristics that were certainly present in the tetrapod ancestors, such as the intracranial joint. Therefore it is of some interest to try and find out how this joint works and what it is there for. The gene pool of the coelacanth has been separated from that of all other living vertebrates for at least 360 million years. Therefore, it is of some interest to find out how much deviation from contemporaneous fishes there has been. Coelacanths have often been used as the classic example of a particular evolutionary pattern whereby evolution is very fast in the early years and then slows down to stability and finally stagnation. This needs to be evaluated in the light of what we now know of the history of the coelacanths as a genetic lineage.

Horseshoe Crabs And Velvet Worms

Author : Richard Fortey
ISBN : 9780307957412
Genre : Science
File Size : 61. 28 MB
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From one of the world’s leading natural scientists and the acclaimed author of Trilobite!, Life: A Natural History of Four Billion Years of Life on Earth and Dry Storeroom No. 1 comes a fascinating chronicle of life’s history told not through the fossil record but through the stories of organisms that have survived, almost unchanged, throughout time. Evolution, it seems, has not completely obliterated its tracks as more advanced organisms have evolved; the history of life on earth is far older—and odder—than many of us realize. Scattered across the globe, these remarkable plants and animals continue to mark seminal events in geological time. From a moonlit beach in Delaware, where the hardy horseshoe crab shuffles its way to a frenzy of mass mating just as it did 450 million years ago, to the dense rainforests of New Zealand, where the elusive, unprepossessing velvet worm has burrowed deep into rotting timber since before the breakup of the ancient supercontinent, to a stretch of Australian coastline with stromatolite formations that bear witness to the Precambrian dawn, the existence of these survivors offers us a tantalizing glimpse of pivotal points in evolutionary history. These are not “living fossils” but rather a handful of tenacious creatures of days long gone. Written in buoyant, sparkling prose, Horseshoe Crabs and Velvet Worms is a marvelously captivating exploration of the world’s old-timers combining the very best of science writing with an explorer’s sense of adventure and wonder.

Living Fossils

Author : Carl Werner
ISBN : 0892216913
Genre : Religion
File Size : 85. 71 MB
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Author : Valerie J. Weber
ISBN : 0836845617
Genre : Juvenile Nonfiction
File Size : 29. 63 MB
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Describes the physical characteristics, behavior, and habitat of the coelacanth.

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