Tracks made by swimming Hippopotami: An example from Koobi Fora (Turkana Basin, Kenya)
Tracks made by swimming Hippopotami: An example from Koobi Fora (Turkana Basin, Kenya)
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DOI：
10.1016/j.palaeo.2014.04.021
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发表时间：
2014-09-01
影响因子：
3
通讯作者：
Falldngham, Peter L.
中科院分区：
文献类型：
--
作者：
Bennett, Matthew R.;Morse, Santa A.;Falldngham, Peter L.
在这里，作者报告了一个接近Koobi Fora（肯尼亚）的遗迹表面，可追溯到1.4 Ma。表面有人类的足迹，以及大型动物的痕迹。在距离人类足迹约70米处的南部挖掘表面显示了各种各样的动物足迹类型，其中大部分似乎是由一种四趾动物通过平底船或在浅水中行走而形成的。根据足迹的形态和相关的化石记录，非人类足迹被解释为是由波塔米人（英语：波塔米）（英语：波塔米）（英语：的轨道类型学解释使用现代模拟观测的potami水下运动。这项工作为相邻的人类足迹提供了重要的环境背景，并首次记录了哺乳动物的游泳足迹。该遗址对解释地质记录中的游泳轨迹具有重要意义，特别是蜥脚类恐龙和其他恐龙的广泛而有争议的轨迹。(C)© 2014 Elsevier B.V.保留所有权利。
Here the authors report an ichnological surface close to Koobi Fora (Kenya) dating to 1.4 Ma. The surface is marked by hominin tracks, as well as traces from large animals. A southern excavation of the surface some 70 m from the hominin tracks displays a diverse range of animal track typologies, most of which appear to have been made by a four digit animal moving via punting or bottom walking in a shallow water body. Due to the track morphology and the associated fossil record, the non-hominin tracks are interpreted as being made by hippopotami, potentially including pygmy species or juveniles. The track typologies are interpreted using modem analogue observations of hippopotami sub-aquatic locomotion. This work provides important environmental context for adjacent hominin tracks and provides the first recorded description of fossilized swim tracks made by mammals. The site has implications for the interpretation of swim tracks in the geological record particularly the widespread and controversial tracks made by sauropods and other dinosaurs. (C) 2014 Elsevier B.V. All rights reserved.