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 .
