Source / 来源: 讲解手册/珍奇柜-活化石展签五审_0923.pdf
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Material / 材料类型: exhibit_context
Text extraction / 提取方式: native

Source transcription; wording is retained as supplied. OCR may contain recognition errors; consult the PDF/image.
来源转录；保留原展签措辞。OCR可能包含识别误差，请核对PDF或图像。

鲟鱼
延续古老形态的鲟形鱼类
鲟鱼是现生鲟形目鱼类的代表，保留了
许多这一古老鱼类类群的典型形态特征。
中国侏罗纪和白垩纪地层中发现的北票
鲟科化石，为研究鲟形目的早期演化提供
了重要证据。这些中生代鲟形类已经具有
延长的吻部、异尾和骨板等特征，与现代
鲟鱼共享许多形态结构。鲟形目漫长的演
化历史展示了辐鳍鱼类适应不同水生环
境的多样化方式。
Acipenseriformes
An Acipenseriform Fish Retaining an Ancient Body Plan
Sturgeons represent the living members of the order 
Acipenseriformes and retain many characteristic features 
of this ancient fish lineage. Fossils of Peipiaosteidae 
discovered from Jurassic and Cretaceous deposits in 
China provide important evidence for understanding the 
early evolution of acipenseriform fishes. These Mesozoic 
acipenseriforms already possessed characteristic features 
such as an elongated snout, a heterocercal tail, and bony 
plates, sharing many morphological traits with modern 
sturgeons. The long evolutionary history of 
Acipenseriformes demonstrates the diverse ways in which 
ray-finned fishes have adapted to aquatic environments.