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USGS CMG InfoBank: Evolution in the Mesozoic

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Comment: 13:58 - 14:38 (00:40)
Source: Annenberg/CPB Resources - Earth Revealed - 11. Evolution Through Time
Keywords: "James Sadd", evolution, Mesozoic, life, "coral reef", "continental margin", reptile, fish, predation, plant, "desiduous tree", bird, mammal, dinosaur

Our transcription: Evolution in the Mesozoic was critical for life on Earth, for it was at this time that life was transformed from ancient to more modern forms.
Reef building corals appeared on continental margins, and large reptiles joined the fishes as swimming predators.
Later in the Mesozoic, the flowering plants and desiduous trees first evolved on land, as well as flying reptiles and the first birds.
Mammals were also present, but they were small and inconspicuous.
But despite this proliferation of life, the Mesozoic Era is best known as the Age of the Dinosaurs, for it was these so-called "terrible lizards" that dominated the land for some 140 million years.

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