A New Silurian Llandovery Telychian Sponge Assemblage From Gotland Sweden

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A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden

A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden
Author :
Publisher : John Wiley & Sons
Total Pages : 161
Release :
ISBN-10 : 9781118906644
ISBN-13 : 1118906640
Rating : 4/5 (640 Downloads)

Book Synopsis A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden by : Freek Rhebergen

Download or read book A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden written by Freek Rhebergen and published by John Wiley & Sons. This book was released on 2014-02-27 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.


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