Journal
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
Volume 259, Issue 2, Pages 129-156Publisher
E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG
DOI: 10.1127/0077-7749/2011/0103
Keywords
Biostratigraphy; Roca Formation; Jaguel Formation; Late Maastrichtian; Danian; nannofossils; mollusks; echinoderms
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Funding
- [PIP2144]
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The Late Cretaceous - Early Paleogene succession exposed in the type area of the Roca Formation (General Roca, Rio Negro Province), has been sampled in detail. Analyses of the calcareous nannofossil assemblages indicate the Late Maastrichtian - Early Danian interval (CC26-NP4 zones; MARTINI 1971), which is the first proved evidence of the Late Maastrichtian in the mentioned type area. Moreover, the Rocanense invertebrate fauna has been placed in a high resolution biostratigraphic scheme based on the nannofossil zones, and three assemblages have been recognized.
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