常見(jiàn)例句Any of various primitive eellike vertebrates of the class Agnatha,such as a lamprey,lacking jaws and true teeth and having a circular,sucking mouth. 圓口綱脊椎動(dòng)物,一種類(lèi)似鰻魚(yú)的無(wú)顎綱原始脊椎動(dòng)物,如盲鰻,沒(méi)有下顎和真正的牙齒,而長(zhǎng)著圓形吮吸的嘴。Any of various primitive eellike vertebrates of the class Agnatha, such as a lamprey, lacking jaws and true teeth and having a circular, sucking mouth. 圓口綱脊椎動(dòng)物一種類(lèi)似鰻魚(yú)的無(wú)顎綱原始脊椎動(dòng)物,如盲鰻,沒(méi)有下顎和真正的牙齒,而長(zhǎng)著圓形吮吸的嘴The Galeaspid is one major group of Agnatha in the Middle Paleozoic,and is mainly distributed in China and North Vietnam. 盔甲魚(yú)類(lèi)是古生代中期化石無(wú)頜類(lèi)的主要類(lèi)群,其分佈主要限於我國(guó)境內(nèi)以及越南北部。The Galeaspid is one major group of Agnatha in the Middle Paleozoic, and is mainly distributed in China and North Vietnam. 摘要盔甲魚(yú)類(lèi)是古生代中期化石無(wú)頜類(lèi)的主要類(lèi)群,其分佈主要限於我國(guó)境內(nèi)以及越南北部。A new form of Polybranchiaspids, Agnatha, Damaspis vartus gen. et sp. nov., was collected from the lower part of Cuifengshan formation (lower Devonian), Qujing district, Yunnan province. 本文記述了雲(yún)南曲靖早泥盆世翠峰山組西山村段多鰓魚(yú)類(lèi)一新屬種;變異垻魚(yú)(Damaspis vartus gen.;et spTHE SENSORY LINE SYSTEM OF GALEASPIDA (AGNATHA) 盔甲魚(yú)類(lèi)的側(cè)線系統(tǒng) 返回 Agnatha