Pteridospermas triásicas del Norte Chico

SILVIA GNAEDINGER; RAFAEL HERBST,

AMEGHINIANA

ASOCIACION PALEONTOLOGICA ARGENTINA

Año: 2001 vol. 38 p. 281 - 298

0002-7014

Abstract. TRlASSIC PTERIDOSPERMSFROM THE NORTE CHICO OF CHILE. The Corystospermaceae and Peltaspermaceae from three Upper Triassic formations from the following areas of northern Chile are presented: area of Cerro La Ternera (localities: Quebrada La Cachivarita, Quebrada El Carbón and Quebrada El Carbón road to Mina La Chilca, La Ternera Formation); area of Vicuña (east of La Serena) (locality: Punta del Viento, Las Breas Formation) and area of Los Molles (locality: Bahía de los Lobos, El Puquén Formation). They comprise the following taxa: Family Corystospermaceae: Dicroidium hernandezii nov. sp., Dicroidium argenteum (Retallack) Gnaedinger combo nov., D. crassum (Menéndez) Petriella, D. dubium (Feistmantel) Gothan, D. lanciíolium (Morris) Gothan, D. obtusifoíium (johnston) Townrow, D. odontopteroides (Morris) Gothan, [ohnstonia dntoitii (Townrow) Retallack, Xylopteris argentina (Kurtz) Frenguelli emend. Stipanicic and Bonetti, and cf. Zuberia sp. Family Peltaspermaceae: Lepidopteris madagascariensis (Carpentier) Townrow and L. stormbergensis (Seward) Townrow. Finally, a few comments are made on the pteridosperm association of these floras.