旋齿鲨 | Helicoprion
Exhibit label transcriptions / 展览科学展签转录
Source wording is preserved; OCR text must be checked against the retained source-page PDF.
保留原始展签措辞；OCR文字请核对随附的原始页面PDF。

No species-specific bilingual scientific-label page was identified. Related exhibit images/context are preserved separately.
未识别出本物种专属的双语科学展签页；相关图像及展览背景材料另行保存。