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Runcaria heinzelinii is an extinct species of plant from the Middle Devonian of Belgium. It is the only species classified under the genus Runcaria, named after Jean de Heinzelin de Braucourt. It was a precursor to seed plants, predating the earliest of the latter by about 20 million years. The fossil pieces of Runcaria heinzelinii that have been found are short branched stems that at their tips have a radially symmetrical megasporangium surrounded by a cupule. The megasporangium has a multilobed integument, and there is an extension on the megasporangium that suggests an adaptation to wind pollination. Thus, this fossil plant has all of the qualities of seed plants except for a solid seed coat and a system to guide the pollen to the ovulum. It sheds new light on how the seed may have evol

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  • Runcaria heinzelinii (es)
  • Runcaria (nl)
  • Runcaria (en)
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  • Runcaria is een geslacht van uitgestorven planten die leefden in het Midden-Devoon. Het is geslacht is tot hiertoe monotypisch. Het omvat één soort, Runcaria heinzelinii. Voor een beschrijving van het geslacht, zie aldaar. (nl)
  • Runcaria heinzelinii es una especie extinta de planta. Sus restos fósiles han sido hallados en estratos del Devónico Medio de Bélgica. Es la única especie conocida del género Runcaria,​ llamada así en honor del geólogo belga Jean de Heinzelin de Braucourt. Es una predecesora de las plantas con semillas, a las que antecedió en aproximadamente 20 millones de años. Los fósiles de Runcaria heinzelinii encontrados son tallos ramificados cortos, en cuyas puntas hay un megasporangio radialmente simetría radial rodeado por una cúpula.​ El megasporangio tiene un tegumento multilobulado, y hay una extensión en el megasporangio que sugiere una adaptación a anemofilia. Aunque carece de cubiertas seminales y de un sistema para guiar el polen hacia el óvulo, esta planta fósil tiene estructuras precursor (es)
  • Runcaria heinzelinii is an extinct species of plant from the Middle Devonian of Belgium. It is the only species classified under the genus Runcaria, named after Jean de Heinzelin de Braucourt. It was a precursor to seed plants, predating the earliest of the latter by about 20 million years. The fossil pieces of Runcaria heinzelinii that have been found are short branched stems that at their tips have a radially symmetrical megasporangium surrounded by a cupule. The megasporangium has a multilobed integument, and there is an extension on the megasporangium that suggests an adaptation to wind pollination. Thus, this fossil plant has all of the qualities of seed plants except for a solid seed coat and a system to guide the pollen to the ovulum. It sheds new light on how the seed may have evol (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Runcaria_megasporangium_and_cupule_drawing.jpg
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  • Runcaria (en)
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  • Runcaria appears to be a transitional fossil precursor of seed plants (en)
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  • Stockmans (en)
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  • heinzelinii (en)
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  • Runcaria heinzelinii es una especie extinta de planta. Sus restos fósiles han sido hallados en estratos del Devónico Medio de Bélgica. Es la única especie conocida del género Runcaria,​ llamada así en honor del geólogo belga Jean de Heinzelin de Braucourt. Es una predecesora de las plantas con semillas, a las que antecedió en aproximadamente 20 millones de años. Los fósiles de Runcaria heinzelinii encontrados son tallos ramificados cortos, en cuyas puntas hay un megasporangio radialmente simetría radial rodeado por una cúpula.​ El megasporangio tiene un tegumento multilobulado, y hay una extensión en el megasporangio que sugiere una adaptación a anemofilia. Aunque carece de cubiertas seminales y de un sistema para guiar el polen hacia el óvulo, esta planta fósil tiene estructuras precursoras de las plantas con semillas,​ y ha ayudado a conocer su evolución. (es)
  • Runcaria heinzelinii is an extinct species of plant from the Middle Devonian of Belgium. It is the only species classified under the genus Runcaria, named after Jean de Heinzelin de Braucourt. It was a precursor to seed plants, predating the earliest of the latter by about 20 million years. The fossil pieces of Runcaria heinzelinii that have been found are short branched stems that at their tips have a radially symmetrical megasporangium surrounded by a cupule. The megasporangium has a multilobed integument, and there is an extension on the megasporangium that suggests an adaptation to wind pollination. Thus, this fossil plant has all of the qualities of seed plants except for a solid seed coat and a system to guide the pollen to the ovulum. It sheds new light on how the seed may have evolved. (en)
  • Runcaria is een geslacht van uitgestorven planten die leefden in het Midden-Devoon. Het is geslacht is tot hiertoe monotypisch. Het omvat één soort, Runcaria heinzelinii. Voor een beschrijving van het geslacht, zie aldaar. (nl)
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