三九養(yǎng)生堂記者 鄧肯·蓋伊 報道
精彩| 徐??(xu)光??(guang)輝??(hui)研??(yan)究??(jiu)員??(yuan)表??(biao)示??(shi)??，在??(zai)分??(fen)類??(lei)學(xué)??(xue)上??(shang)??，雀??(que)鱔?(shan)及??(ji)其??(qi)祖?(zu)先??(xian)類??(lei)型??(xing)(如??(ru)半??(ban)椎??(zhui)魚??(yu)目??(mu)和??(he)拱??(gong)魚??(yu)目??(mu))統(tǒng)??(tong)稱??(cheng)為??(wei)鉸??(jiao)齒??(chi)魚??(yu)類??(lei)??，構(gòu)??(gou)成??(cheng)輻??(fu)鰭??(qi)魚??(yu)亞??(ya)綱??(gang)中??(zhong)新?(xin)鰭?(qi)魚??(yu)類??(lei)的??(de)三??(san)大??(da)主??(zhu)要??(yao)類??(lei)群??(qun)之??(zhi)一?(yi)??。?? 鉸??(jiao)齒??(chi)魚??(yu)類??(lei)的??(de)起??(qi)源?(yuan)和??(he)早??(zao)期?(qi)演??(yan)化??(hua)是??(shi)中??(zhong)國??(guo)科??(ke)學(xué)??(xue)院??(yuan)古??(gu)脊??(ji)椎??(zhui)所??(suo)中??(zhong)生?(sheng)代??(dai)魚??(yu)類??(lei)研??(yan)究??(jiu)團(tuán)??(tuan)隊??(dui)的??(de)重??(zhong)要??(yao)課??(ke)題??(ti)之??(zhi)一??(yi)??，該??(gai)團(tuán)??(tuan)隊??(dui)近?(jin)年??(nian)來??(lai)的??(de)研?(yan)究??(jiu)表??(biao)明??(ming)??，鉸??(jiao)齒??(chi)魚??(yu)類??(lei)的??(de)起??(qi)源??(yuan)時??(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??(yu)類??(lei)在??(zai)中??(zhong)國??(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??(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??(yu)為??(wei)代?(dai)表??(biao)??。??(完??(wan))
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