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Upper Lower and Lower Middle Devonian Chonetacean Brachiopods from Bathurst, Devon and Ellesmere Islands, Canadian Arctic Archipelago
Report, restricted to the brachiopods of the superfamily Chonetacea, is a continuation of the study by Brice (1982) of pentamerid, rhynchonellid and spiriferid brachiopods from the Blue Fjord and Bird Fjord formations, collected in the summer of 1971 and 1972. Thirteen species are described, mainly from Devon and Ellesmere islands. Comparisons and discussions were added to the systematic description of each species, and the biostrategraphic range of each taxon was tentatively established according to the available data.
The Great Ordovician Biodiversification Event
Two of the greatest evolutionary events in the history of life on Earth occurred during Early Paleozoic time. The first was the Cambrian explosion of skeletonized marine animals about 540 million years ago. The second was the "Great Ordovician Biodiversification Event," which is the focus of this book. This is the first book devoted specifically to establishing the global patterns of differentiation of Ordovician biotas through time and space. It provides extensive genus- and species-level diversity data for the many Ordovician fossil groups and presents an evaluation of how each group diversified, with assessments of patterns of change, and rates of origination and extinction.
Index of the Journal of Paleontology
This is an index of Vols. 26-50 of the Journal of Paleontology.
