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中国东南地区的氏龙的踪迹记录了一种可能存在的巨型形龙
Lida Xing1,2, Kecheng Niu3,4, Martin G Lockley5
1Frontiers Science Center for Deep-time Digital Earth, China University of Geosciences (Beijing), Beijing, China.
iScience
|May 27, 2024
概括
新的恐龙痕迹揭示了来自白时期的香盆地的一种巨型恐龙,Fujianipus yingliangi. 这一发现突显了类恐龙中巨型的独立进化.
科学领域:
- 古生物学的古生物学
- 脊椎动物古生物学 脊椎动物古生物学
- 这种技术是什么?
背景情况:
- 位于上盆地的龙翔赛道现场含有白纪恐龙的足迹.
- 已知氏龙的痕迹,但大型形式不太常见.
研究的目的:
- 描述和分类来自龙翔追踪场所的新恐龙痕迹.
- 推断这些轨迹的古生态学和进化影响.
主要方法:
- 对轨道形态和尺寸的分析.
- 与已知的dineonychosaur跟踪 ichnogenera 和 ichnotaxa 的比较.
- 根据轨道尺寸估计部高度.
主要成果:
- 确定了两种不同的氏龙轨迹形态型:较小的Velociraptorichnus和较大的Fujianipus yingliangi.
- 富士尼普斯 (Fujianipus yingliangi) 的足迹大约长36厘米,这表明他的部高度超过1.8米.
- F. yingliangi 的形态特征表明它可能与类动物有亲缘关系.
结论:
- 巨人主义在Deinonychosauria中至少四次独立进化,跨越多个血统.
- 发现F. yingliangi提供了亚洲白纪中期大体类动物的证据.
- 生态背景表明,它们与大型龙和正在衰退的龙有重叠.
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