Examples of Cenozoic in the following topics:
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- In the following Cenozoic Era, mammals radiated into terrestrial and aquatic niches once occupied by dinosaurs.
- The appearance and dominance of flowering plants in the Cenozoic Era created new niches for insects, as well as for birds and mammals.
- Changes in animal species diversity during the late Cretaceous and early Cenozoic were also promoted by a dramatic shift in earth's geography, as continental plates slid over the crust into their current positions, leaving some animal groups isolated on islands and continents or separated by mountain ranges or inland seas from other competitors.
- Early in the Cenozoic, new ecosystems appeared, with the evolution of grasses and coral reefs.
- Late in the Cenozoic, further extinctions followed by speciation occurred during ice ages that covered high latitudes with ice and then retreated, leaving new open spaces for colonization.
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- They were found in North America and Europe in the Cenozoic, going extinct by the end of the Eocene.
- Apes evolved from the catarrhines in Africa midway through the Cenozoic during the Miocene epoch, approximately 25 million years ago.
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- After the extinction of Enantiornithes, modern birds became the dominant bird, with a large radiation occurring during the Cenozoic Era.