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标题	BOHkeACYii
作者	Clair	发表时间	2020/4/11 17:51:08
发表内容	Lost credit card http://fittor.fun/cheapasianteen/ jdoe wrestling federation not wwe Studying the fossil helped scientists solve one of the big mysteries of this type of dinosaur: how it got its crest. Farke says other closely related dinosaurs also have crests, but the Parasaurolophus crest was unique for its tube-like structure, and the fact that it is more circular, broad and long. Other duck-billed dinosaurs, Farke says, had crests that look like a semi-circle on top, a spike sticking off the top of their heads, or crests that look like a hatchet buried into the head.