Tiktaalik, el pez que salió del agua

from Cienciaes.com · host Germán Fernández y Ángel Rodríguez Lozano

Hace ya doce años empezamos este programa de Zoo de fósiles hablando de Acanthostega, el pez de ocho dedos. Acanthostega, que vivió hace unos 365 millones de años, está cerca del antepasado de todos los vertebrados terrestres, aunque él mismo era un animal acuático, sus patas eran incapaces de sostenerlo fuera del agua. Esto no quiere decir que no hubiera otros vertebrados terrestres en esa época, o incluso antes; Seguramente Acanthostega descendía de un linaje de especies terrestres que volvieron prematuramente al agua. Nuestro protagonista de hoy, Tiktaalik, era capaz de arrastrarse por tierra firme como una foca, y es más antiguo que Acanthostega: Vivió en lo que hoy es la isla de Ellesmere hace unos 375 millones de años, a finales del Devónico. Más información en https://cienciaes.com

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This episode is 10 minutes long.

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This episode was published on April 22, 2021.

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