Jet-Size Pterosaurs Took Off from Prehistoric Runways
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Pterosaurs, with wingspans of 34 feet, are the biggest animals that ever flew. New research shows these beasts needed a downward sloping area to flap their wings before awkwardly taking flight.
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Jet-Size Pterosaurs Took Off from Prehistoric Runways
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por adulto (o preço varia de acordo com o tamanho do grupo)
