
Dinosaurs appeared about 230 million years ago and became the dominant land animals before an asteroid struck Earth 66 million years ago, causing a mass extinction. A report by NDTV examines whether…
Dinosaurs appeared about 230 million years ago and became the dominant land animals before an asteroid struck Earth 66 million years ago, causing a mass extinction. A report by NDTV examines whether mammals played a role in the scarcity of tiny dinosaur species. The question concerns how dinosaurs and early mammals shared ancient ecosystems, although the available account does not establish that mammals were the cause.
Dinosaurs held sway on land for most of their history, but their reign ended with the asteroid impact. The report presents the mammal theory as a possibility, not a settled explanation for dinosaur body sizes.
The lazy version of this story would cast mammals as underdogs that simply outsmarted dinosaurs. That is not what the available evidence establishes. Dinosaurs dominated land for roughly 164 million years, while the asteroid ended their reign. Mammals may have influenced which small-bodied niches remained open, but that claim needs fossil evidence across different regions and periods. The useful test is whether future studies find fewer small dinosaurs where early mammals were most diverse.
Source: ndtv.com
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