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Toothlike structure in invertebrates found in the mouth or alimentary canal .

无脊椎动物口中或消化道或壳上发现的牙状结构。

Having two teeth or two toothlike processes ; two-toothed .

具有两个或两个齿状牙齿进程;齿。

Leaf base cuneate ; blade 3-lobed , lobes toothlike or ovate-oblong .

叶基部楔形；叶片3浅裂，裂片或卵形长圆形。

A paleozoic microfossil usually having a toothlike shape and considered to be the remains of an extinct marine organism .

牙形刺一种古生代微化石，一般有牙状形体，被认为是一种已灭绝海生生物体的残骸。

The species is the only known modern frog species with lower teeth , though certain other species with upper teeth do have toothlike structures on the lower jaw .

这是现代青蛙中唯一一种已知下颌长牙的蛙类物种，虽然其他上颌长牙的蛙类在下颌肯定也有类牙构造。