3. South America and Antarctic Peninsula - 3.2 Middle Jurassic of South America and Antarctic Peninsula
Riccardi, A. C.; Westermann, G. E. G.; Damborenea, S. E.
Newsletters on Stratigraphy Volume 21 Number 2 (1990), p. 105 - 128
published: Jan 1, 1990
ArtNo. ESP026002102005, Price: 29.00 €
As the editors have pointed out at the beginning of Part 3, marine facies of the Dogger are present along the Pacific coast, from west-central Argentina and central Chile to central Perú (Geyer 1980; Westermann et al. 1980; Riccardi 1983; Palacios 1985). However the vertical ranges of the palynomorphs, megaflora, foraminifers, ostracods and bivalves, are mainly based on stratigraphic sections in west-central Argentina. The ammonite range charts, on the other hand, are based on studies carried out in Argentina, Chile and Perú. Bajocian ammonites are also known from Venezuela (Bartok et al. 1985), and the southern Behrendt Mountains of Antarctica (Quilty, 1970). Up to now, a regional zonation has been proposed only for the ammonites. Zonations for other invertebrate groups have to await the results of detailed systematic studies that are currently under way.