Cretaceous palynomorphs from the Springhill Formation at Estancia El Salitral, southern Patagonia
The Springhill Formation at Estancia El Salitral, Santa Cruz province, yields a distinctive palynological assemblage of miospores and subordinate dinoflagellates. The occurrence of Muderongia staurota Sarjeant emend. Monteil together with several species such as Circulodinium distinctum Deflandre an...
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| Autores principales: | , |
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00027014_v37_n3_p379_Ottone |
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| Sumario: | The Springhill Formation at Estancia El Salitral, Santa Cruz province, yields a distinctive palynological assemblage of miospores and subordinate dinoflagellates. The occurrence of Muderongia staurota Sarjeant emend. Monteil together with several species such as Circulodinium distinctum Deflandre and Cookson, Muderongia crucis Neale and Sarjeant emend. Monteil, Oligosphaeridium complex (White) Davey and Williams, and Systematophora rosenfeldii Volkheimer and Sarjeant, previously quoted from equivalent horizons at the Agrio Formation, Neuquen Basin, suggest a probable late early Hauterivian/early Barremian age. A comparative analysis of dinoflagellates and ammonite occurrences points to the existence of a marine link between the Austral and Neuquen basins. |
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