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Author: Walter C. Sweet
Publisher: Oxford University Press, USA
ISBN:
Category : Nature
Languages : en
Pages : 232
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Book Description
Very Good,No Highlights or Markup,all pages are intact.
Author: Walter C. Sweet
Publisher: Oxford University Press, USA
ISBN:
Category : Nature
Languages : en
Pages : 232
Get Book Here
Book Description
Very Good,No Highlights or Markup,all pages are intact.
Author: David Leigh Clark
Publisher:
ISBN:
Category :
Languages : en
Pages : 202
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Book Description
Author: Simon J. Knell
Publisher: Indiana University Press
ISBN: 025300604X
Category : Science
Languages : en
Pages : 439
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Book Description
Stephen Jay Gould borrowed from Winston Churchill when he described the conodont animal as a "riddle wrapped in a mystery inside an enigma." This animal confounded science for more than a century. Some thought it a slug, others a fish, a worm, a plant, even a primitive ancestor of ourselves. The list of possibilities grew and yet an answer to the riddle never seemed any nearer. Would the animal that left behind these miniscule fossils known as conodonts ever be identified? Three times the animal was "found," but each was quite a different animal. Were any of them really the one? Simon J. Knell takes the reader on a journey through 150 years of scientific thinking, imagining, and arguing. Slowly the animal begins to reveal traces of itself: its lifestyle, its remarkable evolution, its witnessing of great catastrophes, its movements over the surface of the planet, and finally its anatomy. Today the conodont animal remains perhaps the most disputed creature in the zoological world.
Author: Simon J. Knell
Publisher: Indiana University Press
ISBN: 0253006066
Category : Science
Languages : en
Pages : 635
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Book Description
A fascinating, comprehensive, accessible account of conodont fossils—one of paleontology’s greatest mysteries: “Deserves to be widely read and enjoyed” (Priscum). Stephen Jay Gould borrowed from Winston Churchill when he described the eel-like conodont animal as a riddle wrapped in a mystery inside an enigma. The search for its identity confounded scientists for more than a century. Some thought it a slug, others a fish, a worm, a plant, even a primitive ancestor of ourselves. As the list of possibilities grew, an answer to the riddle never seemed any nearer. Would the animal that left behind the miniscule fossils known as conodonts ever be identified? Three times the creature was found, but each was quite different from the others. Were any of them really the one? Simon J. Knell takes the reader on a journey through 150 years of scientific thinking, imagining, and arguing. Slowly the animal begins to reveal traces of itself: its lifestyle, its remarkable evolution, its witnessing of great catastrophes, its movements over the surface of the planet, and finally its anatomy. Today the conodont animal remains perhaps the most disputed creature in the zoological world.
Author: Jørgen Mørup Jørgensen
Publisher: Springer Science & Business Media
ISBN: 9401158347
Category : Science
Languages : en
Pages : 577
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Book Description
The hagfishes comprise a uniform group of some 60 species inhabiting the cool or deep parts of the oceans of both hemispheres. They are considered the most primitive representatives of the group of craniate chordates, which - apart from the hagfishes that show no traces of verte brae -includes all vertebrate animals. Consequently the hagfishes have played and still playa central role in discussions concerning the evolution of the vertebrates. Although most of the focus on hagfishes may be the result of their being primitive, it should not be forgotten that, at the same time, they are specialized animals with a unique way of life that is interesting in its own right. It is now more than 30 years since a comprehensive treatise on hagfishes was published. The Biology of Myxine, edited by Alf Brodal and Ragnar Fange (Universitetsforlaget, Oslo, 1963), provided a wealth of information on the biology of hagfishes, and over the years remained a major source of information and inspiration to students of hagfishes.
Author: Frank Harold Trevor Rhodes
Publisher: Geological Society of America
ISBN: 0813721415
Category : Conodonts
Languages : en
Pages : 308
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
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Book Description
Author: Max K. Hecht
Publisher: Springer Science & Business Media
ISBN: 146152878X
Category : Science
Languages : en
Pages : 469
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Book Description
After volume 33, this book series was replaced by the journal "Evolutionary Biology." Please visit www.springer.com/11692 for further information. The current volume includes articles on the conceptual relationship of ontogeny, phylogeny, and classification; correlation studies of spatial patterns of genetic variation; and the evolution of flower display and reward.
Author: Jeff Over
Publisher: Elsevier
ISBN: 0080457843
Category : Science
Languages : en
Pages : 343
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Book Description
The Late Devonian and Permian-Triassic intervals are among the most dynamic episodes of Earth history, marked by large secular changes in continental ecosystems, dramatic fluctuations in ocean oxygenation, major phases of biotic turnover, volcanism, bolide impact events, and rapid fluctuations in stable isotope systems and sea level. This volume highlights contributions from a broad range of geological sub-disciplines currently striving to understand these critical intervals of geologically rapid, global-scale changes. * Provides updated, current models for the mid-Late Devonian and Permian-Triassic mass extinction episodes * Highlights several new analytical approaches for developing quantitative datasets * Takes an integrated approach presenting datasets from a broad range of sub-disciplines
Author: James Hanken
Publisher: University of Chicago Press
ISBN: 0226315703
Category : Medical
Languages : en
Pages : 580
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Book Description
In this authoritative three-volume reference work, leading researchers bring together current work to provide a comprehensive analysis of the comparative morphology, development, evolution, and functional biology of the skull.
