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A New Silurian

Llandovery, Telychian Sponge Assemblage from Gotland, Sweden

Freek Rhebergen Joseph Botting

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English
Wiley-Blackwell
31 January 2014
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.
By:   ,
Imprint:   Wiley-Blackwell
Country of Publication:   United Kingdom
Edition:   60th Revised edition
Dimensions:   Height: 274mm,  Width: 208mm,  Spine: 4mm
Weight:   284g
ISBN:   9781118906620
ISBN 10:   1118906624
Series:   Fossils and Strata Monograph Series
Pages:   88
Publication Date:  
Audience:   Professional and scholarly ,  Undergraduate
Format:   Paperback
Publisher's Status:   Active

Freek Rhebergen and Joseph Botting are the authors of A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden, published by Wiley.

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