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Kurs: Biologia > Rozdział 30
Lekcja 3: Zagrożenia dla różnorodności biologicznejWere dinosaurs undergoing long-term decline before mass extinction?
Were dinosaurs already undergoing a long-term decline before an asteroid hit at the end of the Cretaceous about 65.5 million years ago? A study led by Museum scientists gives a multifaceted answer. The findings, published in May, 2012, in the journal Nature Communications, suggest that in general, large-bodied, “bulk-feeding” herbivores were declining during the last 12 million years of the Cretaceous Period. But carnivorous dinosaurs and mid-sized herbivores were not. Stworzone przez: American Museum of Natural History.
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