info:eu-repo/semantics/article
Hallazgo de radiolarios del Paleógeno en la Isla Grande de Tierra del Fuego, Argentina
Fecha
2001-08Registro en:
Jannou, Gabriel Eugenio; Olivero, Eduardo Bernardo; Hallazgo de radiolarios del Paleógeno en la Isla Grande de Tierra del Fuego, Argentina; Asociación Paleontológica Argentina; Ameghiniana; 38; 3; 8-2001; 317-320
0002-7014
1851-8044
CONICET Digital
CONICET
Autor
Jannou, Gabriel Eugenio
Olivero, Eduardo Bernardo
Resumen
The finding of two assemblages of well preserved radiolarians, one from Punta Gruesa and the other from Cabo Irigoyen-Arrayo Vasco area, on the Atlantic coast, Tierra del Fuego Island, is reported. The former contains: Amphicraspedum sp. d. A. murrayanum Haeckel, Buryella dumitricai (Petrushevskaya), Orbiculiforma renillaeformis (Campbell and Clark), and Corythomelissa adunca (Sanfilippo and Riedel) among the most representantive species, its age is constrained to Late Paleocene-Early Eocene. The latter assemblage contains Theocotyle (Theocotylissa) ficus (Ehrenberg), Amphisphaera macrosphaera (Nishimura), Buryella tetradica Foreman, and Spcngurus bilobatus Clark and Campbell, its age is Early Eocene in agreement with the associated planktonic foraminifera. Both assemblages contain Heliostylus sp., Mita sp., and Stylosphaera minor Clark and Campbell.