[PDF] Full Middle And Upper Ordovician Graptolites Trilobites And Biostratigraphy Of Scania And Jamtland Sweden Download eBook

The Ordovician Earth System

Author: Stanley Charles Finney

Publisher: Geological Society of America

Published: 2010-01-01

Total Pages: 204

ISBN-13: 081372466X

"The Ordovician period is a significant chapter in Earth's history that included the great Mid-Ordovician biodiversification event, the Hirnantian glaciation, and long-term greenhouse conditions. Ordovician rocks are widespread on most continents and the recent finalization of a modern chronostratigraphic classification of the Ordovician system now facilitates high-resolution correlations that allow for integrated multidisciplinary research. The diverse papers comprising this volume address orogenesis, paleogeography, climate modeling, sedimentation, biodiversity, and isotopic excursions; together they promote an integrated view of the Ordovician earth system."--Publisher's description.

Trilobites of the Middle Ordovician Elnes Formation of the Oslo Region, Norway

Author: Thomas Hansen

Publisher: Wiley-Blackwell

Published: 2009-05-11

Total Pages: 228

ISBN-13:

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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.