1·Gnathostomes include the bony Osteichthyes and the cartilaginous Chondrichthyes.
有颌类包括硬骨鱼类以及软骨鱼类。
2·Chondrichthyes (sharks, rays and chimaeras) account for only 2% of gnathostome species, the Osteichthyes accounting for the other 98%.
软骨鱼类(鲨鱼、鳐、银鲛)仅占有颌类物种数的2%，其余98%的有颌类都属于硬骨鱼类。
3·Any of numerous fishes of the class Chondrichthyes, characterized by a cartilaginous skeleton and placoid scales and including the sharks, rays, and skates.
属软骨鱼纲的鱼软骨鱼纲鱼的一种，以软骨骨架和板状鱼鳞为特征，包括鲨、鳐、灰鳐。
4·The monitoring survey indicated that Chondrichthyes in the Nansha Islands waters could be captured all the year round, and the yield was mainly related with the fishing effort.
监测调查表明南沙珊瑚礁水域的软骨鱼类在全年均可捕获，产量的变动主要与捕捞努力量相关。