Download e-book for kindle: Amniote origins: completing the transition to land by Stuart Shigeo Sumida; Karen L M Martin

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By Stuart Shigeo Sumida; Karen L M Martin

ISBN-10: 0126764603

ISBN-13: 9780126764604

Amniote Origins integrates smooth systematic tools with experiences of useful and physiological methods, and illustrates how reports of paleobiology might be illuminated by means of reports of neonatology. hence, comparative anatomists and physiologists, practical morphologists, zoologists, and paleontologists will all locate this precise quantity very precious. encouraged by way of the chance of integrating fields that have Read more...

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Pp. D. dissertation, Yale University, New Haven, Connecticut. Fracasso, M. A. 1987. Braincase of Limnoscelis paludis Williston. Postilla, 201:122. Gafftiey, E. S. 1980. Phylogenetic relationships of the major groups of amniotes. Pages 593-610 in: The Terrestrial Environment and the Origin of Land Vertebrates (A. L. ). London: Academic Press. Gardiner, B. G. 1982. Tetrapod classification. Zoological Journal of the Linnean Society, 74:207-232. , D. C. Cannatella, K. De Queiroz, A. G. Kluge, and T.

Laurin andR. <>' V D Extended embryo retention unordered present Wtk absent liMliiilpolymorphic I l^qiiix/nral Figure 6. Evolutionary history of egg retention in extant choanates. This cladogram indicates that the primitive state for egg retention cannot be determined for amniotes or their extant sister taxon on the basis of the available evidence. Therefore, the hypothesis that the origin of amniotes included an intermediate stage in which anamniotic eggs were laid on land is not more parsimonious than the suggestion that the extraembryonic membranes evolved to facilitate extended egg retention.

0 Panderichthyidae 0 ? 7 7 7 7 7 Acanthostega 0 0 0 o&l 0 1 ? 1 0 7 7 0 1 7 Ichthyostega 0 0 0 0 0 ? 0 7 7 0 0 0 1 ? 0 ? 7 0 1 ? 7 Crassigyrinus 1 ? 7 7 1 7 7 Loxommatidae 0 0 0 ? 0 1 0 1 0 0 0 1 1 7 Colosteidae 0 0 0 0 0 1 1 0 0 0 0 0 1 1 ? 1 0 0 ? 0 Dendrerpeton 7 7 7 7 0 ? 0 1 2 0 0 7 7 7 7 1 2 7 0 1 1 1 0 0 1 1 1 0 0 7 7 7 7 0 1 1 1 1 7 7 1 0 7 7 1 1 0 1 0 0 0 0 1 0 ? 1 0 ? 1 1 1 Tersomius 1 0 0 1 1 0 ? 0 Amphibamus 0 0 0 1 Ecolsonia 0 0 0 1 0 Proterogyrinus 0 0 0 0 0 Archeria 0 0 0 1 0 ? 7 Gephyrostegidae 0 0 0 Kotlassia 0 0 0 Seymouria - 1 1 1 1 1 1 1 0 2 1 ?

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Amniote origins: completing the transition to land by Stuart Shigeo Sumida; Karen L M Martin


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