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世界上最大的灭绝的动物的解剖学
Marcelo R Sánchez-Villagra1, Orangel Aguilera, Inés Horovitz
1Universität Tübingen, Spezielle Zoologie, Auf der Morgenstelle 28, D-72076 Tübingen, Germany. marcelo.sanchez@uni-tuebingen.de
Science (New York, N.Y.)
|September 23, 2003
概括
发现一个几乎完整的Phoberomys pattersoni骨揭示了最大的已知的动物大约700公斤. 这种巨大的动物,Phoberomys,显著扩大了已知的Rodentia的大小范围.
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
- 哺乳动物学 哺乳动物学
背景情况:
- 灭绝的动物Phoberomys以前只从有限的化石遗骸中知道.
- 估计表明Phoberomys是有史以来最大的动物,但缺乏完整的骨证据.
研究的目的:
- 为了描述Phoberomys pattersoni的一个非常完整的骨架.
- 提供可靠的体重估计和分析家族遗传关系.
- 为了重建Phoberomys的古老环境.
主要方法:
- 挖掘和分析一个完整的Phoberomys pattersoni骨架.
- 比较骨科来确定进化关系.
- 基于相关化石动物的古生态分析.
主要成果:
- 一个完整的骨架的Phoberomyspattersoni从委内瑞拉的上米奥森时期恢复.
- 身体质量可靠估计约为700公斤,是巴拉的10倍多.
- 头骨后的特征表明与帕卡拉纳斯有着密切的进化关系.
- 化石动物群表明Phoberomys居住在湖和湿地环境中.
结论:
- Phoberomys pattersoni代表了已知的最大的动物,显著增加了Rodentia秩序的尺寸范围.
- 这一发现为南美巨型动物的进化和古生态学提供了关键的见解.
- Phoberomys 在米奥森湿地生态系统中与多样化的动物共存.
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