Forms the whole skull in Cyclostomata, Elasmobranchii and Holocephali.

软骨构成圆口纲,板鳃纲与全纲的整个的盖骨。

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、恐龙蛋、猿人盖骨、瓦器、废墟及乃伊的列队上,打通生生不息的隧道。