Inarticulate brachiopods around the Middle-Upper Ordovician boundary in Västergötland
作者:
LarsE. Holmer,
期刊:
Geologiska Föreningen i Stockholm Förhandlingar
(Taylor Available online 1986)
卷期:
Volume 108,
issue 2
页码: 97-126
ISSN:0016-786X
年代: 1986
DOI:10.1080/11035898609452633
出版商: Taylor & Francis Group
关键词: Brachiopoda;Inarticulata;Acrotretacea;new genus;Rhinotreta;biostratigraphy;Middle-Upper Ordovician boundary;Gullhögen quarry;Västergötland;Sweden
数据来源: Taylor
摘要:
Inarticulate brachiopods are described from the Upper Viruan (Middle Ordovician) and Lower Harjuan (Upper Ordovician) limestones in Gullhögen quarry, Västergötland, southern Sweden. Sixteen species of inarticulate brachiopods (seven named, six of which are new) are assigned to 14 genera (13 named, one of which is new). The lingulids are treated under open nomenclature. One new acrotretacean genus (Rhinotreta) is described as are the acrotretacean speciesHisingerella tenuis, Conotreta? orbicularis, Veliseptum strictum, Rhinotreta muscularis, Torynelasma? curvata and T.? plana.The stratigraphy of the Middle-Upper Ordovician boundary interval in Västergötland is briefly discussed.
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