Download or read book A Monograph of the British Graptolitidae written by Henry Alleyne Nicholson and published by . This book was released on 1872 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the British Graptolitidae written by Henry Alleyne Nicholson and published by . This book was released on 1872 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the British Graptolitidae written by Henry Alleyne Nicholson and published by . This book was released on 1922 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A monograph of the British Graptolitidae written by Henry Alleyne Nicholson and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of British Graptolites written by Gertrude Lilian Elles and published by . This book was released on 1918 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Graptolite Paleobiology written by Jörg Maletz and published by John Wiley & Sons. This book was released on 2017-03-14 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: The graptolites constitute one of the geologically most useful taxonomic groups of fossils for dating rock successions, understanding paleobiogeography and reconstructing plate tectonic configurations in the Lower Palaeozoic. Graptolites were largely planktic, marine organisms, and as one of the first groups that explored the expanses of the world’s oceans are vital for understanding Palaeozoic ecology. They are the best and often the only fossil group for dating Lower Palaeozoic rock successions precisely. Thousands of taxa have been described from all over the planet and are used for a wide variety of geological and palaeontological (biological) research topics. The recent recognition of the modern pterobranch Rhabdopleura as a living benthic graptolite enables a much better understanding and interpretation of the fossil Graptolithina. In the decades since the latest edition of the Graptolite Treatise, the enormous increase of knowledge on this group of organisms has never been synthesised in a compelling and coherent way, and information is scattered in scientific publications and difficult to sort through. This volume provides an up-to-date insight into research on graptolites. Such research has advanced considerably with the use of new methods of investigation and documentation. SEM investigation and research on ultrastructure of the tubaria has made it possible to compare extant and extinct taxa in much more detail. Cladistic interpretation of graptolite taxonomy and evolution has advanced the understanding of this group of organisms considerably in the last two decades, and has highlighted their importance in our understanding of evolutionary processes. This book will show graptolites, including their modern, living relatives, in a quite new and fascinating light, and will demonstrate the impact that the group has had on the evolution of the modern marine ecosystem. This book is aimed not only at earth scientists but also at biologists, ecologists and oceanographers. It is a readable and comprehensible volume for students at the MSc level, while remaining accessible to undergraduates and non-specialists seeking up-to-date information about this fascinating topic in palaeobiology.
Download or read book A Monograph of British Graptolites written by Gertrude Lilian Elles and published by . This book was released on 1907 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Text book of Paleontology Protozoa Coelenterata Zoophytes Echinodermata Vermes Worms Molluscoidea Mollusca Arthropoda Articulates written by Karl Alfred von Zittel and published by . This book was released on 1900 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of British Graptolites written by Gertrude Lilian Elles and published by . This book was released on 1918 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Catalogue of the Books and Pamphlets in the Library the Manchester Museum Owens College written by William Evans Hoyle and published by . This book was released on 1895 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Documents of the Senate of the State of New York written by New York (State). Legislature. Senate and published by . This book was released on 1904 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the British Graptolitid Volume 1 written by Henry Alleyne Nicholson and published by Rarebooksclub.com. This book was released on 2013-09 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1872 edition. Excerpt: ...also (fig. 26, A). There exists, however, a well-marked form of this species (fig. 26, B), in which all the three basal processes are enormously developed, the "radicle" especially so. Again, in Diplograpsus Hopkinsoni, Nich., the "radicle" is extremely minute, or even seemingly wanting, whilst the lateral spines are developed into long setiform, straight, or curved processes. In none of the above-mentioned forms, however, is there any evidence tending to show that the radicle can have served as a point of attachment for the frond, seeing that it is either too small and weak to have performed this office, or it is outflanked by the greater length of the lateral processes. In a second group of the Diplograpsi, of which D. pristiniformis, Hall, and some specimens of D. tamariscus, Nich., may be taken as examples, there are no lateral processes, and the radicle consists of a long proximal extension of the solid axis. In these, therefore, the radicle might possibly have served as a process of attachment, though there is no evidence to show that this was the case. In a third group of the Diplograpsi, comprising D. cometa, Gein. (fig. 27, A), D. palmeus, Barr. (fig. 4, D), D. folium, His. (fig. 4, E), D. vesiculosus, Nich., and D. acuminatus, Nich. (fig. 27, B), there is no proximal extension of the solid axis, and there is, therefore, no true "radicle" in Hall's sense of the term. There is, however, a basal process apparently formed chiefly, if not entirely, by a great elongation of the first pair of cellules. This process is tapering and triangular in shape, and ends proximally in a blunt extremity, which is sometimes slightly bulbous, and which does not appear ever to Fig. 27. A, Diplograpsus cometa, Gein., ...
Download or read book Memoirs written by New York State Museum and published by . This book was released on 1904 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dictionary of National Biography written by Leslie Stephen and published by . This book was released on 1909 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Memoirs of the New York State Museum written by and published by . This book was released on 1904 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
