To see accurate pricing, please choose your delivery country.
 
 
United States
£ GBP
All Shops
We're still open for business - read our EU and Covid-19 statements

British Wildlife

8 issues per year 84 pages per issue Subscription only

British Wildlife is the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists. Published eight times a year, British Wildlife bridges the gap between popular writing and scientific literature through a combination of long-form articles, regular columns and reports, book reviews and letters.

Subscriptions from £40 per year

Conservation Land Management

4 issues per year 44 pages per issue Subscription only

Conservation Land Management (CLM) is a quarterly magazine that is widely regarded as essential reading for all who are involved in land management for nature conservation, across the British Isles. CLM includes long-form articles, events listings, publication reviews, new product information and updates, reports of conferences and letters.

Subscriptions from £18 per year
Academic & Professional Books  Palaeontology  Palaeozoology & Extinctions

Palaeontos 13: Upper Ordovician Brachiopods from the Arnestad and Frognerkilen Formations in the Oslo-Asker District, Norway

Journal / Magazine
Series: Palaeontos Volume: 13
By: Jesper Hansen(Author)
99 pages, 12 plates, 26 illustrations, 52 tables
Palaeontos 13: Upper Ordovician Brachiopods from the Arnestad and Frognerkilen Formations in the Oslo-Asker District, Norway
Click to have a closer look
  • Palaeontos 13: Upper Ordovician Brachiopods from the Arnestad and Frognerkilen Formations in the Oslo-Asker District, Norway Paperback Jan 2008 Usually dispatched within 1-2 weeks
    £48.50
    #207555
Price: £48.50
About this book Customer reviews Related titles
Images Additional images
Palaeontos 13: Upper Ordovician Brachiopods from the Arnestad and Frognerkilen Formations in the Oslo-Asker District, Norway

About this book

Investigations of the brachiopod fauna from the Upper Ordovician Arnestad and Frognerkilen formations in the Oslo-Asker district of Norway have expanded the knowledge about the brachiopods occupying the western margin of Baltica during the Late Ordovician. The fauna comprises 57 species representing 15 linguliformean, 3 craniiformean and 28 rhynchonelliformean genera, including one new linguliformean genus, Osloellan. gen., and 15 new species representing all three subphyla. The inarticulate fauna in the studied interval generally shows affinities to the deeper part of the Floian Elkania Acrotreta Community, which characterized offshore muddy environments in the Lower to Middle Ordovician of Bohemia. Though the taxonomic diversity is low to moderate, this inarticulate fauna comprises many ecological groups ranging from the dominant endobenthic to the epizoan lifestyle. The ecospace utilization of the rhynchonelliformean brachiopods is moderately diverse and strongly resembles that of older non-Baltic carbonate platforms.

The most striking difference is the dominance of the liberosessile strophomenides, which appear to have diversified and expanded into more distal environments since Dapingian time. Changes in diversity and composition of brachiopod guilds and taxa suggest an overall shallowing in the Oslo-Asker district during the Haljala end Keila. This shallowing resulted in a major influx of more shallow-water taxa and coincided with the main breakdown of provinciality between Baltica and Avalonia during the Keila. Statistical analyses suggest that though the taxa from Avalonia apparently first appeared in the east Baltic, a greater proportion of the Baltoscandian taxa occurring in the Oslo Region spread to Avalonia resulting in greater affinities between these two provinces than between Avalonia and the other parts of Baltica.

Customer Reviews

Journal / Magazine
Series: Palaeontos Volume: 13
By: Jesper Hansen(Author)
99 pages, 12 plates, 26 illustrations, 52 tables
Current promotions
British WildlifePrincetonCollins Birds of the World - 30% off pre-orderOrder your free copy of our 2021 equipment catalogues