三九養(yǎng)生堂記者 鄧肯·蓋伊 報道
精彩| 本??(ben)次??(ci)研??(yan)究?(jiu)發(fā)??(fa)現(xiàn)??(xian)的??(de)圓??(yuan)尾??(wei)滇??(dian)東??(dong)魚??(yu)化??(hua)石??(shi)共??(gong)有??(you)13塊??(kuai)?，它?(ta)是??(shi)一??(yi)種??(zhong)長??(chang)梭?(suo)形??(xing)小??(xiao)魚??(yu)?，次??(ci)圓??(yuan)形?(xing)尾??(wei)?，全??(quan)身??(shen)布??(bu)滿?(man)烏?(wu)黑??(hei)發(fā)?(fa)亮??(liang)的??(de)方??(fang)鱗??(lin)?，最??(zui)大??(da)個??(ge)體??(ti)全??(quan)長??(chang)只?(zhi)有??(you)5厘??(li)米??(mi)?，代?(dai)表?(biao)了??(le)羅??(luo)平?(ping)生?(sheng)物??(wu)群??(qun)中??(zhong)體??(ti)型??(xing)最??(zui)小??(xiao)的??(de)鉸??(jiao)齒??(chi)魚??(yu)類??(lei)??。??年??(nian)代??(dai)地??(di)層??(ceng)學(xué)??(xue)研??(yan)究?(jiu)確??(que)定??(ding)羅??(luo)平??(ping)生??(sheng)物??(wu)群??(qun)年??(nian)代??(dai)距??(ju)今?(jin)約??(yue)2.44億??(yi)年??(nian)?，因?(yin)此??(ci)?，圓??(yuan)尾?(wei)滇??(dian)東??(dong)魚??(yu)也??(ye)代??(dai)表??(biao)了??(le)世??(shi)界?(jie)上??(shang)最??(zui)古??(gu)老??(lao)的?(de)鉸??(jiao)齒??(chi)魚??(yu)類??(lei)之??(zhi)一??(yi)???！ ≈??(zhong)新?(xin)網(wǎng)??(wang)北??(bei)京??(jing)10月??(yue)19日??(ri)電??(dian) (記??(ji)者?(zhe) 孫?(sun)自??(zi)法??(fa))現(xiàn)??(xian)生??(sheng)于??(yu)北??(bei)美??(mei)淡?(dan)水??(shui)環(huán)??(huan)境?(jing)的??(de)雀?(que)鱔??(shan)魚??(yu)??，早??(zao)在??(zai)1億??(yi)年??(nian)前?(qian)的??(de)白??(bai)堊??(e)紀(jì)??(ji)就??(jiu)和?(he)恐??(kong)龍??(long)一??(yi)同??(tong)生??(sheng)活??(huo)??，恐??(kong)龍?(long)滅??(mie)絕??(jue)了??(le)??，它??(ta)卻?(que)能??(neng)存??(cun)活??(huo)至??(zhi)今??(jin)??，其??(qi)起??(qi)源??(yuan)演??(yan)化??(hua)相??(xiang)關(guān)?(guan)研??(yan)究??(jiu)長??(chang)期??(qi)以?(yi)來??(lai)備??(bei)受??(shou)關(guān)??(guan)注??(zhu)??。??
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責(zé)編：楊之光
審核：吉尼
責(zé)編：呂程平