[医] 骨盆弓;
Sexto and last, Conseil said, the plectognaths, whose maxillary bone is firmly attached to the side of the intermaxillary that forms the jaw, and whose palate arch is locked to the skull by sutures that render the jaw immovable, an order lacking true pelvic fins and which consists of two families.
康塞尔说:最后第六目是固颚鱼,颚骨是固定在齿颚的颚间骨边上,上颚的拱形骨跟头盖骨缝连接在一起,因而!固定不动,这一目没有真正的腹鳍,共有两科。
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