恐龙化石的秘密

• 清晰：BD
• 类型：
• 主演：RobertBakker PeterL.Larson MarkThompson DavidTrexler
• 年代：0 / 美国 / MichaelJorgensen
• 导演：MichaelJorgensen
• 国家/地区：美国
• 时长：52分钟
• 语言/字幕：英语
• 年代：
• 更新时间：2024-04-08 00:54:11
• 影视/评论：当前有0条评论，
• 详细介绍： SecretsoftheDinosaurMummyconcerns“Leonardo,”aremar… SecretsoftheDinosaurMummyconcerns“Leonardo,”aremarkablywell-preservedjuvenileBrachylophosaurusthatlived77millionyearsago,duringthelateCretaceousperiod.DiscoveredinMontanain2000,Leonardoisprettymuchintact,althoughtheprocessofpetrificationhasamplifiedhispresumedweightof2,000poundsintoafullsixtons.　　SecretshastheusualCGIinterludesofroamingherdsofBrachylophosauruses,butitsmainfocusisonthetechniquesusedtoexploreLeonardo’sviscera.Sincetherewasnoquestionofcrackingthefossilopentorevealitsinsides,theresearchteam–ledbyroguepaleontologistRobertBakker–hadtorelyonincreasinglypowerfulimagingtechniques.　　It’samusingtoseetheheavyarmamentthat’swheeledin:first,high-intensityX-rays,thenevenmorepowerfulgammarays,thenablastofcobaltradiationatNASA’sJohnsonSpaceCenter.Sowhatdothesescansaccomplish?Well,it’snotgivinganythingawaytorevealthat,yes,scientistshavebeenabletoobserveanatomicaldetailsinLeonardo’smummythathavenotyetbeenseeninanyotherdinosaurfossils.ItseemsthatLeonardohadabird-likecropinitsneck,amoreextensivebeakthanpreviouslyrealized,andanintricatearrayofdifferent-sizedscalesonitshead,back,underbellyandlegs.　　TheresearchteamwasalsoabletodeterminehowLeonardodied,andwhatheateinthelastfewdaysbeforehemethisdemise.Infact,thislastnuggetofinformationmaybethemostimportantofall,sincethepollenandleavesfoundinLeonardo’sgutprovidevaluableinformationabouttheecosystemofthewesternUnitedStatesinthelateCretaceous. 详情