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Un bangiófito de algas rojas del Proterozoico del ártico canadiense
N J Butterfield1, A H Knoll, K Swett
1Botanical Museum, Harvard University, Cambridge, MA 02138, USA.
Science (New York, N.Y.)
|October 5, 1990
Resumen
Fósiles de algas rojas del Ártico de Canadá.
Área de la Ciencia:
- Paleontología Paleontología.
- Geología Geología Geología.
- Botánica La botánica es la botánica.
Sus antecedentes:
- La Formación de Caza en el Ártico de Canadá contiene antiguas rocas de carbonato silicificado.
- Estas rocas datan de hace entre 1250 y 750 millones de años, anteriores al período Ediacariano.
Objetivo del estudio:
- Identificar y clasificar microfósiles bien conservados encontrados en la Formación de Caza.
- Comprender la historia evolutiva de la vida multicelular temprana, en particular las algas.
Principales métodos:
- Análisis geológico de rocas carbonatadas peritidales silicificadas.
- Examen morfológico detallado de algas rojas fosilizadas.
Principales resultados:
- Se han identificado fósiles bien conservados de algas rojas bangiófitas.
- La morfología detallada, que incluye filamentos multiseriados, vincula los fósiles con el moderno género Bangia.
- Estos fósiles son distintos de otros eucariotas pre-ediacarianos.
Conclusiones:
- El descubrimiento proporciona evidencia de la diversificación temprana de las algas multicelulares.
- Las algas multicelulares existían mucho antes de la radiación Ediacaran de los animales.
- Este hallazgo refina nuestra comprensión de la evolución temprana de los eucariotas.
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