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Fósiles de Prototaxites estructural y químicamente distintos de hongos extintos y existentes
Corentin C Loron1, Laura M Cooper2, Sean McMahon1,3
1UK Centre for Astrobiology, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, UK.
Science advances
|January 21, 2026
Resumen
Prototaxites, el primer organismo terrestre gigante, probablemente no era un hongo. Los análisis químicos y estructurales muestran que era distinto de los hongos conocidos, lo que sugiere un linaje extinto.
Área de la Ciencia:
- Paleontología
- Ecosistemas del Devónico Temprano
- Organismos fosilizados
Sus antecedentes:
- Prototaxites, un organismo gigante del Devónico Temprano, tiene una clasificación taxonómica incierta.
- El debate persiste durante más de 165 años sobre su afinidad: hongo o linaje extinto.
Objetivo del estudio:
- Investigar la afinidad de Prototaxites.
- Contrastar su organización y composición molecular con los hongos.
Principales métodos:
- Análisis químico de fósiles de Prototaxites.
- Comparación estructural con hongos conocidos.
- Análisis de fósiles de chert de Rhynie de 407 millones de años.
Principales resultados:
- Los fósiles de Prototaxites taiti fueron químicamente distintos de los hongos contemporáneos.
- Los fósiles fueron estructuralmente distintos de todos los hongos conocidos.
- Los hallazgos desafían la hipótesis fúngica para Prototaxites.
Conclusiones:
- Es poco probable que Prototaxites sea un hongo.
- Sugiere que Prototaxites pertenece a un linaje eucariota completamente extinto.
- Proporciona nuevas perspectivas sobre las primeras formas de vida terrestres.
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