使用线性测量来诊断Spinosaurus的生态息地
1School of Biological Sciences, University of Reading, Reading, United Kingdom.
PeerJ
|June 17, 2024
概括
脊龙头骨形状分析揭示了水生动物养的适应性,使其与陆地类类类动物区别开来. 形态特征,如长长的鼻子,表明水生猎物的"等待"捕食者策略.
科学领域:
- 古生物学的古生物学
- 功能性形态学 功能性形态学
- 比较解剖学的比较解剖学
背景情况:
- 关于斯皮诺索鲁斯的生态讨论在很大程度上是定性的.
- 对热足动物头骨形状和生态学的定量分析是有限的.
研究的目的:
- 量化分析与生态领域相关的Spinosaurus头骨形状.
- 为了研究骨形状在赛欧普西德群中变化的模式.
主要方法:
- 对大小调整的线性头骨测量的多变量数据分析.
- 集群分析 (监督和无监督) 以确定形状生态学关联.
- 在形态空间中比较Spinosaurus和其他种类.
主要成果:
- 陆地生态在形态上与半水生态和水生态不同.
- 脊类动物,包括脊类动物 (Spinosaurus),与其他类动物 (theropods) 独立聚集,靠近海洋种类和鸟.
- 头骨形状,特别是头骨的位置和正面延长,与养适应 (水生与陆生) 有关.
结论:
- 头骨形态学表明,Spinosaurus适应了使用"等待"策略来捕食水生猎物.
- 在Spinosaurus中,通过大 - 前大复合体的状延长,与食鱼鸟类的适应相平行.
- 基于头骨形状的生态分类更准确地由养适应驱动,而不是广泛的生态领域.
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