三九養(yǎng)生堂記者 鄧肯·蓋伊 報(bào)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(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??(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(shí)秘(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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