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Abstract
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 species Hisingerella 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.