Dinossauros de sangue quente viraram aves? Causa pode ser climática

31/05/2024 Por TechDoido / Alan Corrêa

Cientistas descobriram que dinossauros desenvolveram sangue quente devido a mudanças climáticas causadas por intensa atividade vulcânica entre 250 e 65 milhões de anos atrás.

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Pesquisadores da Universidade de Vigo analisaram ossos e localizações de dinossauros para entender a evolução dos grupos de terópodes e ornitísquios para animais de sangue quente.

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Atividade vulcânica intensa causou primeiro um resfriamento acentuado e depois um aquecimento significativo do clima, influenciando a sobrevivência dos dinossauros.

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Espécies de sangue frio não sobreviveram às flutuações climáticas intensas, enquanto os de sangue quente se adaptaram melhor e exploraram novos habitats.

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Dinossauros de sangue quente, como terópodes (velociraptor, tiranossauro) e ornitísquios (triceratops), prosperaram durante grandes flutuações climáticas.

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A evolução do sangue quente permitiu que esses dinossauros se adaptassem a novos ambientes, essencial para a sobrevivência durante períodos de instabilidade climática.

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Aves modernas, descendentes dos terópodes, dependem de um metabolismo elevado, viabilizado pelo sangue quente, para voar e explorar diferentes habitats.

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