瓦拉努斯的第一个头骨材料来自印度的中新世纪
Andrej Čerňanský1,2, Rajeev Patnaik3
1Department of Ecology, Laboratory of Evolutionary Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia.
Anatomical record (Hoboken, N.J. : 2007)
|April 29, 2025
概括
来自印度的化石Varanus (监视) 部 晚期米奥琴 提供了对早期亚洲瓦拉尼德头骨特征的关键见解. 这一发现增强了对这个时期种群和古气候的理解.
科学领域:
- 古生物学的古生物学
- 脊椎动物动物学 脊椎动物动物学
- 古生物地理学 古生物地理学
背景情况:
- 亚洲,特别是印度的Varanus (监视) 的化石记录稀少,以前的发现仅限于孤立的脊椎.
- 来自印度的米奥森瓦拉尼德的头骨元素以前是未知的,这阻碍了对其头骨形态和该地区进化历史的理解.
- 印度哈里塔利扬加尔附近的中新世纪晚期 (约9.03万年前) 遗址提供了一个独特的机会来研究早期瓦拉尼德人群.
研究的目的:
- 来自印度的瓦拉努斯的第一个米奥森头骨元素 (部) 的发现报告.
- 为了解印度的中新世纪晚期瓦拉尼德的头骨特征提供了见解.
- 根据这种热爱爬行动物的存在来推断古气候条件.
主要方法:
- 在Haritalyangar附近的化石遗址的地质挖掘和约会.
- 对回收的Varanus大骨进行了形态分析.
- 与现存和化石Varanus物种进行比较分析.
主要成果:
- 发现了瓦拉努斯部,代表了印度的瓦拉尼德的第一个米奥森头骨化石.
- 部表现出明显的特征,与现代的Varanus bengalensis不同,并与Varanus salvator和其他Varanus物种有相似之处.
- 这种热爱爬行动物的存在表明,该地区的最低年平均温度约为15°C,在中新世纪晚期.
结论:
- 哈里塔利扬加大部是亚洲有限的瓦拉尼德化石记录的重要补充,为印度的米奥森头骨形态提供了首次见解.
- 虽然在等待进一步的头骨发现之前,分类学识别仍然是暂时的,但化石表明与现代的Varanus bengalensis有着不同的血统.
- 这一发现有助于了解印度次大陆的晚期米奥森古生物地理和古气温,突出了热友爬行动物的存在.
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