Get Discovering Fossil Fishes PDF

By John G. Maisey

ISBN-10: 0813338077

ISBN-13: 9780813338071

Fishes have a different evolutionary historical past that stretches again in time greater than 450 million years. they're exceptionally ancient-older than the dinosaurs-and contain the ancestors of all limbed vertebrates residing on land, even humans.In getting to know Fossil Fishes, John Maisey lines the evolution of fishes over the process approximately part one billion years, describing the invention in their impressive fossil continues to be and explaining what those historic animals let us know approximately our personal position within the heritage of lifestyles. Combining present medical info with exciting stories approximately old and modern fieldwork, Maisey brings to lifestyles the improvement of armored fishes, monster sharks, and fishes with fingers as he finds the subtleties of evolution's maximum luck story.More considerable and extra varied than their air-breathing cousins, fishes at the present time dominate the seas and freshwaters of Earth. via extraordinary full-color pictures in their fossils and of fossil reconstructions by means of artists David Miller and Ivy Rutzky, besides informative pictures, charts, diagrams, and drawings, we find a astounding half-billion-year historical past during which lies our personal watery origins.

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Lieberman (2000, 2003a, 2003b), however, noted that episodes of geodispersal (geographic areas fusing rather than splitting) could produce general nodes. In a similar vein, the taxon pulse hypothesis (Erwin, 1979, 1981) asserts that episodes 25 Phylogenetic Methods in Palaeobiogeography of general biotic expansion (‘jump dispersal’) occurring between vicariance (or, more generally, isolation) events set the stage for future isolation events. Lieberman (2000, 2003a, 2003b) proposed a protocol for distinguishing general nodes in area cladograms due to isolation from those due to geodispersal, and Halas et al.

When this inherent overproduction produced variety in critical characters, natural selection would preserve the versions that were functionally superior in that particular environmental context (adaptations). Whenever an environment changed, those organisms that already had the adaptations necessary to survive would do so, whereas those lacking appropriate adaptations would not. The production of organismal diversity thus required that organisms be at once autonomous from, and sensitive to, the environment, another example of complexity.

2002) The quality of the fossil record: Implications for evolutionary analysis. Annual Review of Ecology and Systematics, 33: 561–588. G. (1997a) Sophisticated falsification and research cycles: Consequences for differential character weighting in phylogenetic systematics. Zoologica Scripta, 26: 349–360. G. (1997b) Testability and the refutation and corroboration of cladistic hypotheses. Cladistics, 13: 81–96. Lieberman, B. (2000) Paleobiogeography, Plenum/Kluwer Academic, New York. Lieberman, B.

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Discovering Fossil Fishes by John G. Maisey

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