Crédito: PixabayInvestigadores da Universidade de Oregon descobriram um cromossoma sexual no polvo de duas manchas da Califórnia que data provavelmente de há 480 milhões de anos - muito antes de os polvos e os náutilos divergirem. Este facto torna-o um dos mais antigos cromossomas sexuais animais conhecidos.A descoberta confirma que os polvos e outros...
Crédito: PixabayOs fósseis antigos dos primeiros dinossauros do mundo podem estar enterrados em locais quase impossíveis de investigar, de acordo com uma nova investigação da University College London e do Museu de História Natural do Reino Unido. Os mais antigos fósseis de dinossauros e o seu significado evolutivo Os fósseis de dinossauro mais antigos atualmente registados...
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