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Living Fossil The Story Of The Coelacanth

Author : Keith Stewart Thomson
ISBN : 9780393245356
Genre : Nature
File Size : 72.50 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.
Category: Nature

A Fish Caught In Time

Author : Samantha Weinberg
ISBN : 9780060932855
Genre : Science
File Size : 76.68 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.
Category: Science

Living Fossils Clues To The Past

Author : Caroline Arnold
ISBN : 9781607348368
Genre : Juvenile Nonfiction
File Size : 88.83 MB
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You haven’t changed a bit! Living fossils, or modern-day animals that very closely resemble their ancient relatives. Meet the coelacanth, horseshoe crab, dragonfly, tuatara, nautilus, and Hula painted frog. All are living fossils. Why have they changed so little over time, while other animals evolved or went extinct? Using contrasting "then" and "now" illustrations, veteran nonfiction writer Caroline Arnold alternates between a prehistoric creature in its native environment and its contemporary living-fossil counterpart. An amazing way to experience the ancient past! Back matter includes a time line, additional information about the six living fossils, a glossary, and suggestions for further reading.
Category: Juvenile Nonfiction

Fossil Fish Found Alive

Author : Sally M. Walker
ISBN : 9781575055367
Genre : Juvenile Nonfiction
File Size : 34.67 MB
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Describes the 1938 discovery of the coelacanth, a fish previously believed to be extinct, and subsequent research about it.
Category: Juvenile Nonfiction


Author : Peter L.. Forey
ISBN : 0955074096
Genre : Coelaca
File Size : 28.98 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.
Category: Coelaca

Horseshoe Crabs And Velvet Worms

Author : Richard Fortey
ISBN : 9780307957412
Genre : Science
File Size : 77.34 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.
Category: Science

The Annotated Old Fourlegs

Author : Mike Bruton
ISBN : 0813064643
Genre : Biography & Autobiography
File Size : 89.37 MB
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The latest episode in the greatest fish discovery ever made "The appearance of the Coelacanth was like a gigantic tidal wave which washed me violently from my path, held me in its grip, carried me along, and set my feet on a quest that dominated some of the best years of my life."--JLB Smith, Old Fourlegs: The Story of the Coelacanth When scientist JLB Smith published Old Fourlegs: The Story of the Coelacanth in 1956, he created an international sensation. A dramatic account of the discovery of a creature thought to have been extinct for 65 million years, the book brought science into the living rooms of thousands. It was published in six English editions and translated into ten foreign languages. The Annotated Old Fourlegs brings this incredible story back to life for today's readers. Smith's famous account begins with the finding of a strange fish off the coast of South Africa by a local fisherman. As large as a person, the fish had fins like arms and vicious snapping jaws. Smith became certain that what had been caught was the legendary coelacanth, previously known only through fossils. The book follows Smith's obsessive drive to track down other specimens and to learn more about this extraordinary fish that has lived on Earth from the era of the dinosaurs to modern times. The Annotated Old Fourlegs features a facsimile reprint of the original book with extensive margin notes, providing insights on JLB Smith, updates on coelacanth research, and comments on the coelacanth's influence on contemporary culture. Mike Bruton, an ichthyologist who has dedicated his life to continuing the pioneering studies begun by Smith, provides a new introduction and concluding chapters that bring the coelacanth story up to date.
Category: Biography & Autobiography

The Legacy Of The Mastodon

Author : Keith Stewart Thomson
ISBN : 9780300151848
Genre : Science
File Size : 27.42 MB
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The uncovering in the mid-1700s of fossilized mastodon bones and teeth at Big Bone Lick, Kentucky, signaled the beginning of a great American adventure. The West was opening up and unexplored lands beckoned. Unimagined paleontological treasures awaited discovery: strange horned mammals, birds with teeth, flying reptiles, gigantic fish, diminutive ancestors of horses and camels, and more than a hundred different kinds of dinosaurs. This exciting book tells the story of the grandest period of fossil discovery in American history, the years from 1750 to 1890. The volume begins with Thomas Jefferson, whose keen interest in the American mastodon led him to champion the study of fossil vertebrates. The book continues with vivid descriptions of the actual work of prospecting for fossils--a pick in one hand, a rifle in the other--and enthralling portraits of Joseph Leidy, Ferdinand Hayden, Edward Cope, and Othniel Marsh among other major figures in the development of the science of paleontology. Shedding new light on these scientists feuds and rivalries, on the connections between fossil studies in Europe and America, and on paleontologys contributions to Americas developing national identity, The Legacy of the Mastodon is itself a fabulous discovery for every reader to treasure.
Category: Science

Before Darwin

Author : Keith Stewart Thomson
ISBN : 030012600X
Genre : Religion
File Size : 49.20 MB
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Scientists and thologians had long been debating the religious implicaitons of evolutionary theory when Darwin announced his theory of natural selection.
Category: Religion