Source / 来源: 讲解手册/珍奇柜-活化石展签五审_0923.pdf
Page / 页码: 36
Material / 材料类型: scientific_label
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。

Atractosteus tristoechus
An Ancient Gars Lineage Surviving Today
The Cuban gar is one of the larger representatives of the
family Lepisosteidae and one of the most ancient lineages 
of living ray-finned fishes. It has an elongated body, an 
extended snout, and densely arranged sharp teeth, with 
the entire body covered by hard rhomboid ganoid scales, 
displaying the distinctive adaptations of gars. The Cuban 
gar is an ambush predator that primarily feeds on fishes 
and other aquatic animals. Its swim bladder contains a 
rich network of blood vessels and can function as an 
accessory respiratory organ, allowing it to tolerate 
low-oxygen aquatic environments. Gars have a long 
evolutionary history, first appearing in the Mesozoic, and 
have retained many distinctive morphological features. 
They provide important insights into the evolutionary 
history and ecological adaptations of ray-finned fishes.
Crinoidea
Classification: Echinodermata Crinozoa
Age: Recent
Locality: China
Status: Fluid-preserved specimen
海百合
分类：棘皮动物 海百合类
时代：现生
产地：中国
属性：浸制标本