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New 'Chicken from Hell' Discovered — A newly identified “chicken from hell” species suggests dinosaurs weren’t sliding toward extinction before the fateful asteroid hit (www.scientificamerican.com)

submitted 7 months ago by [email protected] to c/[email protected]

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[–] [email protected] 3 points 7 months ago

Yes, that doesn't change my point. In both cases it looks like the ecosystem had multiple niches that in the fossil record previously having different species apparently all filled with a single species. With Trex, one of the current theories is that it filled different niches as it grew up.

Although with Trex, there may have been a half sized version that was hunting alongside the big one(s).