(澳大利亚及新西兰电视频道)(英语:National Geographic (Australian and New Zealand TV channel)) 国家地理 (联合王国及爱尔兰电视频道)(英语:National Geographic (British and Irish TV channel))
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(原始内容存档于2015-09-25). Fossils reveal prehistoric life cycle[失效連結]. AustralianGeographic. 20 July 2010. Dan Gaffney. Loud and lazy but didn't chew gum: Ancient