三九養(yǎng)生堂記者 鄧肯·蓋伊 報(bào)道
精彩| 之??(zhi)前??(qian)??，在??(zai)羅??(luo)平??(ping)生??(sheng)物??(wu)群??(qun)發(fā)??(fa)現(xiàn)?(xian)的??(de)鉸??(jiao)齒??(chi)魚(yú)??(yu)類(lèi)?(lei)都??(dou)可??(ke)以??(yi)歸??(gui)入??(ru)拱??(gong)魚(yú)?(yu)目??(mu)??，但??(dan)圓??(yuan)尾??(wei)滇??(dian)東??(dong)魚(yú)??(yu)的?(de)獨(dú)??(du)特??(te)骨??(gu)骼??(ge)形??(xing)態(tài)??(tai)特??(te)征??(zheng)顯?(xian)然??(ran)區(qū)??(qu)別??(bie)于??(yu)拱??(gong)魚(yú)??(yu)目??(mu)魚(yú)??(yu)類(lèi)??(lei)??。??此??(ci)次??(ci)研??(yan)究??(jiu)在??(zai)詳??(xiang)細(xì)??(xi)的??(de)骨??(gu)骼??(ge)形??(xing)態(tài)??(tai)學(xué)??(xue)研?(yan)究??(jiu)基??(ji)礎(chǔ)??(chu)上??(shang)??，將??(jiang)圓??(yuan)尾??(wei)滇??(dian)東??(dong)魚(yú)??(yu)納?(na)入??(ru)大??(da)尺??(chi)度??(du)的??(de)分??(fen)支??(zhi)分?(fen)析??(xi)中??(zhong)??，研??(yan)究??(jiu)結(jié)??(jie)果??(guo)顯??(xian)示??(shi)??，圓??(yuan)尾??(wei)滇??(dian)東??(dong)魚(yú)??(yu)位??(wei)于??(yu)鉸??(jiao)齒??(chi)魚(yú)?(yu)類(lèi)?(lei)的??(de)最??(zui)底??(di)部??(bu)???！ °q??(jiao)齒??(chi)魚(yú)??(yu)類(lèi)??(lei)的??(de)起??(qi)源??(yuan)和??(he)早??(zao)期?(qi)演??(yan)化??(hua)是??(shi)中??(zhong)國(guó)??(guo)科??(ke)學(xué)??(xue)院??(yuan)古?(gu)脊??(ji)椎??(zhui)所??(suo)中??(zhong)生?(sheng)代??(dai)魚(yú)?(yu)類(lèi)??(lei)研?(yan)究??(jiu)團(tuán)??(tuan)隊(duì)?(dui)的??(de)重?(zhong)要??(yao)課??(ke)題??(ti)之??(zhi)一??(yi)??，該??(gai)團(tuán)??(tuan)隊(duì)??(dui)近??(jin)年??(nian)來(lái)??(lai)的??(de)研??(yan)究??(jiu)表??(biao)明??(ming)??，鉸??(jiao)齒??(chi)魚(yú)??(yu)類(lèi)??(lei)的??(de)起??(qi)源??(yuan)時(shí)??(shi)間??(jian)比??(bi)恐??(kong)龍??(long)還??(hai)要??(yao)早?(zao)??，恐??(kong)龍??(long)最??(zui)早??(zao)出??(chu)現(xiàn)??(xian)在??(zai)晚??(wan)三??(san)疊??(die)世??(shi)??，而?(er)最??(zui)古??(gu)老??(lao)的??(de)鉸?(jiao)齒?(chi)魚(yú)??(yu)類(lèi)??(lei)在??(zai)中??(zhong)國(guó)??(guo)中??(zhong)三??(san)疊?(die)世??(shi)早??(zao)期??(qi)的??(de)羅??(luo)平??(ping)生??(sheng)物??(wu)群??(qun)中??(zhong)就??(jiu)已??(yi)經(jīng)??(jing)出??(chu)現(xiàn)?(xian)??，以??(yi)拱??(gong)魚(yú)??(yu)目?(mu)和??(he)這??(zhe)次??(ci)新??(xin)發(fā)?(fa)現(xiàn)??(xian)的??(de)圓??(yuan)尾??(wei)滇?(dian)東??(dong)魚(yú)??(yu)為??(wei)代??(dai)表??(biao)??。??(完??(wan))
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