怪异恐龙目录 (2009)

Bizarre Dinosaurs / 又名:

导演: Jenny Kubo

编剧: Eleanor Grant

演员: Jack Horner,Paul Sereno,Gregory Erickson,Lawrence Witmer,Robert Bakker,Kristi Curry Rogers,Mark Norell,Phillip Manning

制片国家/地区: 美国

语言: 英语

上映日期: 2009-10-11(美国)

片长: 48分钟

集数: 0

剧情简介

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　　As dinosaurs grew into the behemoths of the Cretaceous period they evolved many extraordinary but apparently useless features including spikes, sails horns, crests and the tiny "arms" of tyrannosaurs. The program reviews these unusual features and discusses theories of why they exist.