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Gogonasus

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Infraclass |
Tetrapodomorpha |
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Gogonasus was a fish that lived during the Devonian period, about 380 million years ago.
Fossils of the animal
were found in the Gogo Formation in the Kimberley region of Western
Australia.
The animal's name means "snout from Gogo" and reflects the fact that
it was initially described from a single fossilized snout (although subsequently well-preserved
3-dimensional fossils
of nearly the entire animal have been found).
Gogonasus was a lobe-finned fish that lived in a 870 mile (1400 kilometer) coral reef
that was once off the coast of Western
Australia.
It is an interesting animal as it shows a number of features transitional
between those of most lobe-finned fishes and early tetrapods (four-limbed animals
which eventually took to land). These transitional features include fins which
show the evolutionary precursors of tetrapod forearm bones (the radius and ulna),
as well as the structure of its inner ear.

Gogonasus is a fish that lived during the Devonian

Related Information & Resources
See Also

Acanthostega Books Here are some books from Amazon.com:
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By Sébastien Steyer
Indiana University Press Released: 2012-06-01 Paperback (200 pages)
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Click Here | Product Description:
This beautiful volume introduces the incredible animals that populated the planet before the Age of the Dinosaurs. Readers voyage to a time, beginning about 370 million years ago, when the first four-footed vertebrates appeared, and ending 200 million years later at the moment when the dinosaurs begin their ascent. During this time, vertebrates emerge from the sea and there appears a parade of animals, each more astonishing than the last. On this expedition, we learn how paleontologists become detectives to understand the history of life and we discover that many widely held ideas about the evolution of species are completely false. Earth before the Dinosaurs is an entertaining and informative guide to an astonishing and little-known world. |
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By Michel Laurin
University of California Press Hardcover (216 pages)
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Click Here | Product Description:
More than three hundred million years ago--a relatively recent date in the two billion years since life first appeared--vertebrate animals first ventured onto land. This usefully illustrated book describes how some finned vertebrates acquired limbs, giving rise to more than 25,000 extant tetrapod species. Michel Laurin uses paleontological, geological, physiological, and comparative anatomical data to describe this monumental event. He summarizes key concepts of modern paleontological research, including biological nomenclature, paleontological and molecular dating, and the methods used to infer phylogeny and character evolution. Along with a discussion of the evolutionary pressures that may have led vertebrates onto dry land, the book also shows how extant vertebrates yield clues about the conquest of land and how scientists uncover evolutionary history. |
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By Ronald Cohn Jesse Russell
VSD Paperback
 | | Product Description: High Quality Content by WIKIPEDIA articles! Acanthostega (von altgr. άκανθα, akantha = Dorn, Stachel und Ï?Ï"Îγη, stege = Decke, Bedeckung) ist eine ausgestorbene Gattung der Wirbeltiere (Vertebrata), die zu den Stammgruppenvertretern der Landwirbeltiere (Tetrapoda) gehört, ihr gesamtes Leben jedoch im Wasser verbrachte. Acanthostega ist für die Evolutionsbiologie von besonderer Bedeutung, da es als Mosaikform dem Ursprung der Tetrapoden nahesteht. Nur die Typusart A. gunnari, deren Fossil 1933 in 365 Mio. Jahre alten Sedimentgesteinen aus der Zeit des Oberdevon in Grönland gefunden wurde, ist bislang wissenschaftlich beschrieben. This book was created using print-on-demand technology. |
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By Carl Zimmer
Free Press Released: 1999-09-08 Paperback (304 pages)
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Click Here | Product Description: Everybody Out of the Pond At the Water's Edge will change the way you think about your place in the world. The awesome journey of life's transformation from the first microbes 4 billion years ago to Homo sapiens today is an epic that we are only now beginning to grasp. Magnificent and bizarre, it is the story of how we got here, what we left behind, and what we brought with us. We all know about evolution, but it still seems absurd that our ancestors were fish. Darwin's idea of natural selection was the key to solving generation-to-generation evolution -- microevolution -- but it could only point us toward a complete explanation, still to come, of the engines of macroevolution, the transformation of body shapes across millions of years. Now, drawing on the latest fossil discoveries and breakthrough scientific analysis, Carl Zimmer reveals how macroevolution works. Escorting us along the trail of discovery up to the current dramatic research in paleontology, ecology, genetics, and embryology, Zimmer shows how scientists today are unveiling the secrets of life that biologists struggled with two centuries ago. In this book, you will find a dazzling, brash literary talent and a rigorous scientific sensibility gracefully brought together. Carl Zimmer provides a comprehensive, lucid, and authoritative answer to the mystery of how nature actually made itself. |
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By Jennifer A. Clack
Indiana University Press Hardcover (400 pages)
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Around 370 million years ago, a distant relative of a modern lungfish began the most exciting adventure the world had ever seen: it emerged from the water and laid claim to the land. Over the next 70 million years, this tentative beachhead became a worldwide colonization by an ever-increasing variety of four-limbed life. These first "tetrapods" are the ancestors of all vertebrate life on land. Gaining Ground tells the rich and complex story of their emergence and evolution. Beginning with their closest relatives, the lobefin fishes such as lungfishes and coelacanths, Jennifer A. Clack defines the characteristics of tetrapods, describing their anatomy and explaining how they are related to other vertebrates. Clack looks at the Devonian environment in which tetrapods evolved, describes the known species, and explores the order and timing of anatomical changes that occurred during the fish-to-tetrapod transition. She reports that older ideas about the transition are being overturned by recent discoveries and new ideas about evolutionary change. Following the story through the Carboniferous period, she shows how the evolution of terrestrial characters occurred several times, convergently, among different groups. |
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By DK Publishing
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With more than 20 million copies sold in 41 languages and more than 88 countries worldwide, DK Eyewitness has been the most trusted series in reference publishing for more then three decades. Visually engaging, informative, and lively, the more than 100 titles in the Eyewitness series focus on subjects that complement students' personal interests and areas of study to make learning simple and fun. - The most trusted nonfiction series for teachers, librarians, and parents
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University Of Chicago Press Paperback (344 pages)
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Click Here | Product Description:
Long ago, fish fins evolved into the limbs of land vertebrates and tetrapods. During this transition, some elements of the fin were carried over while new features developed. Lizard limbs, bird wings, and human arms and legs are therefore all evolutionary modifications of the original tetrapod limb.
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By Donald R. Prothero
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Over the past twenty years, paleontologists have made tremendous fossil discoveries, including fossils that mark the growth of whales, manatees, and seals from land mammals and the origins of elephants, horses, and rhinos. Today there exists an amazing diversity of fossil humans, suggesting we walked upright long before we acquired large brains, and new evidence from molecules that enable scientists to decipher the tree of life as never before. The fossil record is now one of the strongest lines of evidence for evolution. In this engaging and richly illustrated book, Donald R. Prothero weaves an entertaining though intellectually rigorous history out of the transitional forms and series that dot the fossil record. Beginning with a brief discussion of the nature of science and the "monkey business of creationism," Prothero tackles subjects ranging from flood geology and rock dating to neo-Darwinism and macroevolution. He covers the ingredients of the primordial soup, the effects of communal living, invertebrate transitions, the development of the backbone, the reign of the dinosaurs, the mammalian explosion, and the leap from chimpanzee to human. Prothero pays particular attention to the recent discovery of "missing links" that complete the fossil timeline and details the debate between biologists over the mechanisms driving the evolutionary process. Evolution is an absorbing combination of firsthand observation, scientific discovery, and trenchant analysis. With the teaching of evolution still an issue, there couldn't be a better moment for a book clarifying the nature and value of fossil evidence. Widely recognized as a leading expert in his field, Prothero demonstrates that the transformation of life on this planet is far more awe inspiring than the narrow view of extremists. (7/1/08) |
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