UN NUEVO QUISTE DE DINOFLAGELADO DEL CAMPANIANO DE ANTÁRTIDA: UNA ESPECIE BIOESTRATIGRÁFICA Y PALEOECOLÓGICA CLAVE

Autores/as

DOI:

https://doi.org/10.5710/PEAPA.15.02.2024.487

Palabras clave:

Palinología marina, Paleoambientes de offshore, Bioestratigrafía, Cretácico Tardío, Cuenca James Ross, Península Antártica

Resumen

El análisis palinológico de rocas marinas del Cretácico Superior de las formaciones Rabot y Snow Hill Island, Cuenca James Ross, noreste de la Península Antártica, ha revelado el registro de una especie de quiste de dinoflagelado no descrita previamente, asignada anteriormente a Oligosphaeridium sp. A. Proporcionamos una descripción formal de esta nueva especie, que denominamos Stiphrosphaeridium sobralii sp. nov. y agregamos algunos rasgos al género Stiphrosphaeridium. La nueva especie proviene de niveles campanianos, los cuales están calibrados con datos magnetoestratigráficos. Se considera un importante marcador bioestratigráfico del Cretácico Tardío comúnmente registrado en ambientes de offshore de la Antártida.

Citas

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06/12/2024

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