重新评估一个软的Edmontosaurin,对hadrosaurid生命的外观和多样性的影响
Henry S Sharpe1, Phil R Bell2, Ian Baylatry1
1Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
Anatomical record (Hoboken, N.J. : 2007)
|November 29, 2025
概括
一个木乃伊化哈德罗萨乌斯恐龙标本揭示了软组织的头骨顶部 (),挑战了以前的分类. 这一独特的发现,被指定为红柳埃德蒙多鱼,突出了预测恐龙骨结构软特征的局限性.
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
- 恐龙类动物 (Dinosauria) 是一个恐龙类动物.
背景情况:
- 哈德罗沙类恐龙被归类为哈德罗沙类恐龙.
- 有顶的 有顶的
- 或或或或或或或或或
- 没有的非状动物.
- 基于骨的头骨.
- 一个木乃伊化哈德罗萨乌斯标本此前表明,在一个据称是骨架的软组织顶 (骨架) 中.
- 没有的非状动物.
- 一个物种. 一个物种.
- 头骨表面骨质学对软显示结构的预测能力有限.
研究的目的:
- 为了重新描述一个被木乃伊化的哈德罗萨乌斯标本与软组织的头骨脊.
- 为了识别标本的新的骨和体特征.
- 根据头骨形态学来确定标本的分类学地位.
主要方法:
- 详细重新描述了木乃伊化哈德罗萨乌斯标本.
- 分析骨元素和皮肤,包括软组织的保存.
- 对轨道后口袋形态的检查,以进行分类学评估.
主要成果:
- 该标本拥有一个软组织的头骨 () 覆盖了大部分的头骨屋顶与一个前边缘.
- 发现的新特征包括部整体损伤和脱节的轴元件,支持缓慢埋葬的木乃伊化.
- 一个浅的后轨道口袋没有一个后背转器,阻止了对现有的埃德蒙多萨鲁斯物种的引用,保证了被指定为红柳埃德蒙多萨鲁斯.
结论:
- 红柳 Edmontosaurin 代表一个独特的分类单元,由于其独特的轨道后口袋形态.
- 软组织的头骨可以存在于没有骨的类动物中,这挑战了传统的分类.
- 需要进一步的研究,以了解软组织在其他hadrosaurid亚家族的分布.
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