在非神经类恐龙和其他灭绝的类恐龙中,大脑到内内腔指数的代理
Fabien Knoll1, Asato Ishikawa2, Soichiro Kawabe3,4
1Departamento de Paleobiología, Museo Nacional de Ciencias Naturales-CSIC, Madrid, Spain.
The Journal of comparative neurology
|April 8, 2024
概括
灭绝的类动物的大脑大小可以用一个新的方程来更好地理解. 这项研究改进了脑内腔 (BEC) 估计,超出了不同恐龙群体的单一值.
科学领域:
- 古生物学的古生物学
- 比较解剖学的比较解剖学
- 神经科学是一个神经科学.
背景情况:
- 由于化石记录不完整,对已灭绝的类动物的大脑大小的估计具有挑战性.
- 之前的研究表明,在现存的类动物中,内分和非神经内分体积之间存在反向关系.
研究的目的:
- 开发和应用一个方程来估计非神经恐龙和已灭绝的类恐龙的脑内腔 (BEC) 容量.
- 为了提供更准确的推断关于已灭绝的类动物的认知能力.
主要方法:
- 在现存的鱼类亲属 (鱼类,古,禽类) 中测量了内分种主导和BEC指数.
- 基于这些解剖特征的预测方程的开发.
- 方程应用于主要恐龙类的化石内分泌物.
主要成果:
- 在不同的恐龙群体中,BEC的估计值有很大的差异,从大约0.6在类动物和类动物中,到大约0.7在类动物,巴基塞法洛类动物,类动物和热类动物中.
- 该研究表明,单一的,一般化的BEC值 (例如0.5) 对于准确的估计是不够的.
结论:
- 开发的方程允许在已灭绝的类动物中进行更细致的BEC估计.
- 研究人员应该避免使用一个全面的BEC值,而是采用精细的,类特定的估计,以改善白的认知推断.
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