Forms the whole skull in Cyclostomata, Elasmobranchii and Holocephali.

软骨构成圆口纲,板鳃亚纲与全头鱼亚纲整个头盖骨。

On the rank that reachs mummy from cranium of trilobite, dinosaurian egg, pithecanthrope, crockery, remains, get through gives birth to the channel that is born not to cease.

从三叶虫、、猿人头盖骨、瓦器、废墟及乃伊列队上,打通生生隧道。