最新的白纪大拉普托类热足类恐龙揭示了大拉普托类的进化和古生物学
Lucio M Ibiricu1,2, Matthew C Lamanna3, Bruno N Alvarez4
1Instituto Patagónico de Geología y Paleontología (IPGP-CCT CONICET-CENPAT), Chubut, Argentina. ibiricu@cenpat-conicet.gob.ar.
Nature communications
|September 23, 2025
概括
来自巴塔哥尼亚的一种新的巨类恐龙化石揭示了这些大爪类热足动物存活到白纪/古纪的边界. 这一发现揭示了巨龙的饮食和它们作为顶级捕食者的角色.
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
- 恐龙古生物学 恐龙古生物学
背景情况:
- 巨拉普托拉,大爪的热足类恐龙,已知从白纪沉积物全球.
- 了解大猛龙的形态和进化仅限于碎片化化石和稀缺的重叠骨元素.
研究的目的:
- 描述来自巴塔哥尼亚的新型巨类属和物种.
- 为了调查最新的生存和古生态作用的巨.
主要方法:
- 挖掘和分析来自Lago Colhué Huapi形成的部分关节骨.
- 石层学分析以确定化石的年龄.
- 检查保存的猎物遗骸在热足动物的下巴.
主要成果:
- 在巴塔哥尼亚最上层的白纪发现了一种新的巨类属和物种,一种衍生的巨类.
- 这种分类是最完整和最新幸存的巨类动物之一,表明其持续存在于白纪/古纪边界.
- 在热足动物的下巴中发现的鱼形部可以提供关于巨鱼的饮食和食策略的见解.
结论:
- 巨类动物是白纪末期巴塔哥尼亚生态系统的顶级捕食者.
- 这一发现与同一时期南美更北方地区的峰捕食者角色形成鲜明对比.
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