Biota ediacárica, los primeros ecosistemas macroscópicos complejos de la tierra.

  • Roberto Díaz Sibaja Universidad Michoacana de San Nicolás de Hidalgo
Palabras clave: Ediacárico, Pluricelularidad, Animales, Paleontología, Evolución

Resumen

La biota ediacárica representa uno de los mayores hitos en la historia evolutiva del planeta, pues contiene a las primeras formas de vida pluricelulares macroscópicas bien conocidas en el registro fósil, además de poseer integrantes microscópicos de gran relevancia evolutiva como los posibles primeros animales triploblásticos y embriones. Su posición estratigráfica corresponde con el final del Neoproterozoico, tiempo de origen de los primeros organismos eucarióticos. La mayoría de los planes corporales de los organismos macroscópicos del Ediacárico no tienen equivalentes modernos e incluyen simetrías triradiales, octoradiales y fractales. La biota ediacárica vio su final al evolucionar los primeros organismos macrodepredadores que luego dominarían los ecosistemas del Fanerozoico.

Biografía del autor/a

Roberto Díaz Sibaja, Universidad Michoacana de San Nicolás de Hidalgo

Facultad de Biología

Laboratorio de Paleontología

Estudiante de Doctorado en Ciencias Biológicas

Citas

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Publicado
2016-05-16
Sección
ÁREA 2. BIOLOGÍA Y QUÍMICA