Pinegopora chilensis, a new Permian bryozoan species of the Andean bryozoan province in southwestern Gondwana

CARRERA, M.G.; STERREN, A.F.; CISTERNA, G.A.; NIEMEYER, H.R.

JOURNAL OF PALEONTOLOGY

PALEONTOLOGICAL SOC INC

Lugar: Lawrence; Año: 2020 vol. 94 p. 180 - 184

0022-3360

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 deposits from Patagonia (Sabattini, 2002; Pagani and Taboada, 2010). Permian bryozoan records were mentioned in two sections from northern Chile, with reports of scarce indeterminate forms (Rivano and Sepúlveda, 1985; Díaz Martínez et al., 2000).The aim of this contribution is to provide a new record of a bryozoan species from northernChile, based on material collected from the Cerro El Árbol Formation in the Augusta Victoria area (Fig. 1). The faunal content and the lithological characteristics are analyzed in the context of the paleogeographic position of this area, along the western Gondwana margin.