10% chegirma bering
Maslahat bering ushbu kitobni do'stingiz sotib olganidan 29 323,05 soʻm oling.
0+
matnPDF
Hajm 91 sahifa
A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden
matnPDF
293 230,47 soʻm
Kitob haqida
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.
Janrlar va teglar
Izoh qoldiring
Kirish, kitobni baholash va sharh qoldirish
Kitob tavsifi
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.
Kitob Freek Rhebergen, Joseph Botting «A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden» — veb-saytda onlayn o'qing. Fikr va sharhlar qoldiring, sevimlilarga ovoz bering.
Yosh cheklamasi:
0+Litresda chiqarilgan sana:
26 iyun 2018Hajm:
91 Sahifa ISBN:
9781118906637Umumiy o'lcham:
76 МБUmumiy sahifalar soni :
91Matbaachilar:
Mualliflik huquqi egasi:
John Wiley & Sons Limited
