LA SUBZONA DE CLIMACOGRAPTUS BICORNIS (CARADOCIANO TEMPRANO) EN LA FORMACION LAS PLANTAS EN SU LOCALIDAD TIPO, PRECORDILLERA DE SAN JUAN, ARGENTINA
AbstractClimacograptus (Climacograptus) bicornis bicornis (Hall) is first described in the upper part of Las Plantas Formation in the homonymous section (San Juan Province) associated with Nemagraptus gracilis (Hall), Dicranograptus nicholsoni longibasalis Ruedemann and Decker and Dicellograptus sp. This association belongs to the Climacograptus bicornis Subzone (N. gracilis Zone) and it indicates an Early Caradocian age for the bearing layers. The graptolite fauna has been correlated with the upper part of Los Azules Formation at Cerro Viejo of Huaco and with Las Plantas Formation at Cerro Potrerillo area (Sierra de Perico), San Juan Province.
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