答案就在1999年出的一本名叫《卵、巢以及恐龙宝贝：恐龙繁殖初探》的书里。
A 1999 book squarely addresses your question: Kenneth Carpenter's Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction.
答案就在1999年出的一本名叫《卵、巢以及恐龙宝贝：恐龙繁殖初探》的书里。
A 1999 book squarely addresses your question: Kenneth Carpenter's Eggs, Nests, and Baby Dinosaurs: A Look at Dinosaur Reproduction.
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