Although bryozoans have been mentioned in several papers, few systematic descriptions of this group are available from the late Paleozoic of western Gondwana, particularly from the Permian sequences. In South America, bryozoan faunas have been reported from the Permian of Venezuela (Laya and Tucker, 2012), Perú, and Bolivia (Sakagami, 1995 and references therein). In Argentina, the late Paleozoic bryozoan faunas have been described mainly from the Carboniferous deposits of the central-western Precordillera Basin (Sabattini, 1986 and references therein). Few Permian records were reported from northwestern Argentina (Arizaro Formation; Aceñolaza et al., 1972) and in the siliciclastic postglacial marine...

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