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The Evolution of Flowers
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AbstractFlowers are relatively recent innovations. The first land plants arose around 470 million years ago, but fossil evidence indicates that only after another 340 million years did the angiosperms (flowering plants) appear. However, following their appearance in the fossil record of the early Cretaceous period, the angiosperms spread geographically from their point of origin in the tropics and diversified dramatically to become the ecologically dominant plant group in the great majority of terrestrial habitats. This extraordinary radiation into an enormous range of morphological diversity took a mere 40 million years. This chapter examines the origin of the flowering plants, and then looks in detail at those first flowers, considering their morphology, their development, and their diversification.
Title: The Evolution of Flowers
Description:
AbstractFlowers are relatively recent innovations.
The first land plants arose around 470 million years ago, but fossil evidence indicates that only after another 340 million years did the angiosperms (flowering plants) appear.
However, following their appearance in the fossil record of the early Cretaceous period, the angiosperms spread geographically from their point of origin in the tropics and diversified dramatically to become the ecologically dominant plant group in the great majority of terrestrial habitats.
This extraordinary radiation into an enormous range of morphological diversity took a mere 40 million years.
This chapter examines the origin of the flowering plants, and then looks in detail at those first flowers, considering their morphology, their development, and their diversification.
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