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Author : Peter Alsen
Publisher : Unknown
Page : 240 pages
File Size : 42,5 Mb
Release : 2006
Category : Ammonoidea
ISBN : STANFORD:36105124267209
Author : Christian Klug,Dieter Korn,Kenneth De Baets,Isabelle Kruta,Royal H. Mapes
Publisher : Springer
Page : 615 pages
File Size : 49,6 Mb
Release : 2015-07-22
Category : Science
ISBN : 9789401796330
This two-volume work is a testament to the abiding interest and human fascination with ammonites. We offer a new model to explain the morphogenesis of septa and the shell, we explore their habitats by the content of stable isotopes in their shells, we discuss the origin and later evolution of this important clade, and we deliver hypotheses on its demise. The Ammonoidea produced a great number of species that can be used in biostratigraphy and possibly, this is the macrofossil group, which has been used the most for that purpose. Nevertheless, many aspects of their anatomy, mode of life, development or paleobiogeographic distribution are still poorly known. Themes treated are biostratigraphy, paleoecology, paleoenvironment, paleobiogeography, evolution, phylogeny, and ontogeny. Advances such as an explosion of new information about ammonites, new technologies such as isotopic analysis, tomography and virtual paleontology in general, as well as continuous discovery of new fossil finds have given us the opportunity to present a comprehensive and timely "state of the art" compilation. Moreover, it also points the way for future studies to further enhance our understanding of this endlessly fascinating group of organisms.
Author : B.P. Kear,J. Lindgren,J.H. Hurum,J. Milàn ,V. Vajda
Publisher : Geological Society of London
Page : 333 pages
File Size : 46,9 Mb
Release : 2016-06-02
Category : Science
ISBN : 9781862397484
Scandinavia and its Arctic territories of Svalbard and Greenland represent geographical regions with a long history of Mesozoic palaeontology. However the last few decades have witnessed a surge of new discoveries, especially from the famous Triassic and Late Jurassic Lagerstätten of East Greenland and Spitsbergen in the Svalbard Archipelago, together with the Late Cretaceous strata of southern Sweden and UNESCO World Heritage locality at Stevns Klint in Denmark; the latter recording one of the most complete terminal Mesozoic rock successions known globally. Collectively, these deposits encompass the spectrum of Mesozoic biotic evolution from the explosive radiation of marine faunas after the Permian-Triassic extinction and seminal specialization of amniotes for life in the sea, to the Late Triassic–Jurassic domination of the land by dinosaurs and Cretaceous development of modern terrestrial floras and marine ecosystems. This volume authored by leading experts in the field encapsulates key aspects of the latest research, and will provide a benchmark reference for future investigations into the Scandinavian Mesozoic world.
Author : Jaap Klein,Miklós Kretzoi,Mária Kretzoi
Publisher : Unknown
Page : 304 pages
File Size : 44,8 Mb
Release : 2006
Category : Ammonoidea
ISBN : CHI:69488159
Author : Anonim
Publisher : Unknown
Page : 504 pages
File Size : 45,7 Mb
Release : 1986
Category : Geology
ISBN : CHI:27317004
Author : Anonim
Publisher : Unknown
Page : 230 pages
File Size : 54,9 Mb
Release : 1995
Category : Geology
ISBN : OSU:32435070345640
Author : Micheil V. Kakabadze,Mikhail Vladimirovich Kakabadze,Philip J. Hoedemaeker,Ph. J. Hoedemaeker
Publisher : Unknown
Page : 186 pages
File Size : 49,6 Mb
Release : 2010
Category : Ammonoidea
ISBN : STANFORD:36105213100949
Author : Hans Frebold
Publisher : Energy, Mines and Resources Canada ; available by mail from Printing and Pub. Supply and Services Canada
Page : 40 pages
File Size : 53,7 Mb
Release : 1978
Category : Ammonoidea
ISBN : UIUC:30112098325779
"Until the results presented in this report became available it had been thought that the late Bathonian was absent from the stratigraphic record in the Canadian Cordillera. This report is thus of importance first in developing a fuller understanding of the Jurassic biostratigraphy of the area and second in understanding the geological history of the Cordilleran region." --
Author : Freek Rhebergen,Joseph Botting
Publisher : John Wiley & Sons
Page : 88 pages
File Size : 53,8 Mb
Release : 2014-02-27
Category : Science
ISBN : 9781118906644
A newly discovered, diverse sponge fauna of early Silurian age, is described from Gotland, Sweden. This is the first Silurian sponge assemblage known from Baltica, and the only diverse Llandoverian assemblage known worldwide. The fauna includes 20 genera and 29 species, of which three genera and six species are new. Eighteen species are new to Baltica. The fauna shows strong similarities to later Silurian assemblages in Arctic Canada, but one endemic species comprises ca. 50% of the fauna. The fauna shows that lithistid sponges recovered well from the late Ordovician extinction in some areas, and became widely spread in the early Silurian. In contrast, non-lithistid sponges like, such as hexactinellids, appear to have evolved rapidly during the Late Ordovician – early Silurian interval, and some modern groups probably originated in inshore habitats.
Author : Anonim
Publisher : Unknown
Page : 830 pages
File Size : 53,9 Mb
Release : 1982
Category : Historical geology
ISBN : OSU:32435022431746
Author : Michael Robert House,J. R. Senior
Publisher : Academic Press
Page : 620 pages
File Size : 49,5 Mb
Release : 1981
Category : Nature
ISBN : UCSD:31822010483873
Author : Jörg Maletz
Publisher : John Wiley & Sons
Page : 336 pages
File Size : 45,6 Mb
Release : 2017-03-14
Category : Science
ISBN : 9781118515785
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.
Author : Thomas Hansen
Publisher : Wiley-Blackwell
Page : 228 pages
File Size : 42,7 Mb
Release : 2009-05-11
Category : Science
ISBN : STANFORD:36105028500077
The highly fossiliferous upper Darriwilian to lower Sandbian Elnes Formation of Norway presents an interesting insight into the general responses and preferences of Lower Palaeozoic faunas belonging to a stable, mud dominated middle to outer shelf environment in connection with a major transgressive to regressive system tract. The rich trilobite fauna consisting of nearly 100 taxa is closely linked to the changes in the environment, being most abundant in a muddy and siliciclastic dominated environment just above storm wave base. The fauna is highly endemic for the region and the remainder of Baltoscania. This monograph presents a taxonomic description of the total trilobite fauna, including a new genus and seven hitherto unknown species. New and extensive biostratigraphical data is presented on the trilobites together with a study on the biogeographical and ecological aspects of the faunas.
Author : R. Casey,P. F. Rawson
Publisher : Unknown
Page : 448 pages
File Size : 45,8 Mb
Release : 1973
Category : Electronic
ISBN : OCLC:923095585
Author : S. Jensen
Publisher : Wiley-Blackwell
Page : 112 pages
File Size : 50,9 Mb
Release : 2006-12-06
Category : Science
ISBN : 8200376656
