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??(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??(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??(lei)的??(de)最??(zui)底??(di)部??(bu)???！ ∷?(ta)介??(jie)紹??(shao)說(shuō)??(shuo)??，現(xiàn)??(xian)生??(sheng)的??(de)雀??(que)鱔??(shan)魚(yú)??(yu)類??(lei)屬??(shu)于??(yu)大??(da)型??(xing)的??(de)肉??(rou)食??(shi)性??(xing)魚(yú)??(yu)類??(lei)??，成??(cheng)年?(nian)體??(ti)長(zhǎng)??(chang)可??(ke)達(dá)??(da)3米??(mi)??，它??(ta)能??(neng)成??(cheng)為??(wei)恐??(kong)龍??(long)時(shí)??(shi)代??(dai)“活??(huo)化??(hua)石??(shi)”的?(de)原??(yuan)因??(yin)主??(zhu)要??(yao)包??(bao)括??(kuo)：一??(yi)是??(shi)雀??(que)鱔?(shan)全?(quan)身??(shen)長(zhǎng)??(chang)有??(you)一??(yi)層??(ceng)異??(yi)常??(chang)堅(jiān)??(jian)硬??(ying)的??(de)菱??(ling)形??(xing)魚(yú)??(yu)鱗??(lin)??，可??(ke)以??(yi)防??(fang)御??(yu)敵??(di)害??(hai)；二?(er)是??(shi)雀??(que)鱔??(shan)魚(yú)??(yu)卵??(luan)有??(you)劇??(ju)毒??(du)??，不??(bu)可??(ke)食??(shi)用??(yong)??，使??(shi)后??(hou)代??(dai)的??(de)生??(sheng)存??(cun)得??(de)到??(dao)保??(bao)障??(zhang)；三??(san)是??(shi)雀??(que)鱔??(shan)魚(yú)??(yu)鰾??(biao)還??(hai)具??(ju)有??(you)呼??(hu)吸??(xi)功??(gong)能??(neng)??，當(dāng)??(dang)水??(shui)中??(zhong)缺??(que)氧??(yang)時(shí)??(shi)??，它?(ta)可??(ke)以??(yi)游??(you)到?(dao)水??(shui)面??(mian)進(jìn)??(jin)行??(xing)呼??(hu)吸??(xi)??。??
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