Download or read book Miocene Mollusks from Bowden Jamaica Gastropods and discussion of results written by Wendell Phillips Woodring and published by . This book was released on 1928 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miocene mollusks from Bowden Jamaica 2 Gastropods and discussion of results written by Wendell P. Woodring and published by . This book was released on 1928 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1943 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1971 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1982 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lower Pliocene Mollusks and Echinoids from the Los Angeles Basin California and Their Inferred Environment written by Wendell Phillips Woodring and published by . This book was released on 1938 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Systematics of the Families Mitridae Volutomitridae Mollusca Gastropoda written by Walter O. Cernohorsky and published by . This book was released on 1970 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Royal Society of New Zealand written by and published by . This book was released on with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Molluscan Fauna of the Alum Bluff Group of Florida written by Julia Anna Gardner and published by . This book was released on 1926 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Genus Conus Mollusca Neogastropoda in the Plio Pleistocene of the Southeastern United States written by Jonathan Robert Hendricks and published by . This book was released on 2008 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conus (or cone) shells are common in many Pliocene and Pleistocene fossil deposits from the Coastal Plain of the southeastern United States, but have never been the subjects of a comprehensive taxonomic review or revision. In total, 84 names (including those of some Recent species and fossil taxa from other strata or areas) have been applied to Plio-Pleistocene cone shells from this region, and since Green described Conus marylandicus in 1830, and additional 59 species have been described from these strata. Forty of these taxa were described in the last 17 years and were published outside of the peer-reviewed literature, making their status as distinct species suspect, particularly because most are poorly illustrated, perfunctorily described, and based on few specimens. This makes them nearly impossible to evaluate without direct inspection of type material and/or access to large suites of specimens. Evaluating whether these suspect taxon names represent distinctive morphospecies is critical to attaining an understanding of the evolutionary history and diversity of Neogene and Recent Conus in the western Atlantic. The present work provides a systematic treatment of 82 of the 84 names that have been applied to Conus shells from the Plio-Pleistocene fossil records of Virginia, North Carolina, South Carolina, and Florida. Here, through application of a conservative morphological species concept (one that accepts large amounts of intraspecific morphological variation), 19 of these nominal taxa are accepted as representing distinctive species of Plio-Pleistocene Conus from this study area. In addition, this investigation also resulted in the discovery of one new fossil morphospecies, described here as Conus burnetti n. sp. An identification key to these 20 species is provided. The status of three additional, previously described species (known only by their type specimens) remains less certain. Two names that are likely familiar to collectors of Plio-Pleistocene Conus from the United States Coastal Plain, C. floridanus Gabb, 1869, and C. druidi Olsson, 1967, are synonymized, respectively, with G. fg. largillierti Kiener, 1845, and C. haytensis G. B. Sowerby II, 1850. All previously described species of sinistral Conus are considered to belong to one highly morphologically variable species, C. adversarius Conrad, 1840.
Download or read book Evolutionary Patterns written by Alan H. Cheetham and published by University of Chicago Press. This book was released on 2001-08 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: With all the recent advances in molecular and evolutionary biology, one could almost wonder why we need the fossil record. Molecular sequence data can resolve taxonomic relationships, experiments with fruit flies demonstrate evolution and development in real time, and field studies of Galapagos finches have provided the strongest evidence for natural selection ever measured in the wild. What, then, can fossils teach us that living organisms cannot? Evolutionary Patterns demonstrates the rich variety of clues to evolution that can be gleaned from the fossil record. Chief among these are the major trends and anomalies in species development revealed only by "deep time," such as periodic mass extinctions and species that remain unchanged in form for millions of years. Contributors explore modes of development, the tempo of speciation and extinction, and macroevolutionary patterns and trends. The result is an important contribution to paleobiology and evolutionary biology, and a spirited defense of the fossil record as a crucial tool for understanding evolution and development. The contributors are Ann F. Budd, Efstathia Bura, Leo W. Buss, Mike Foote, Jörn Geister, Stephen Jay Gould, Eckart Hâkansson, Jean-Georges Harmelin, Lee-Ann C. Hayek, Jeremy B. C. Jackson, Kenneth G. Johnson, Nancy Knowlton, Scott Lidgard, Frank K. McKinney, Daniel W. McShea, Ross H. Nehm, Beth Okamura, John M. Pandolfi, Paul D. Taylor, and Erik Thomsen.
Download or read book Collected papers written by Carlotta Joaquina Maury and published by . This book was released on 1902 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lower Oligocene Gastropoda Scaphopoda and Cephalopoda of the Vicksburg Group in Mississippi written by Francis Stearns MacNeil and published by . This book was released on 1984 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The National Union Catalog Pre 1956 Imprints written by and published by . This book was released on 1968 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Caribbean Journal of Science written by and published by . This book was released on 1997 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of The Academy of Natural Sciences Vol 125 1973 written by and published by Academy of Natural Sciences. This book was released on with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
