New footprints from Laetoli (Tanzania) provide evidence for marked body size variation in early hominins
New footprints from Laetoli (Tanzania) provide evidence for marked body size variation in early hominins
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DOI：
10.7554/elife.19568
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发表时间：
2016-12-14
期刊：
影响因子：
7.7
通讯作者：
Manzi, Giorgio
中科院分区：
文献类型：
--
作者：
Masao, Fidelis T.;Ichumbaki, Elgidius B.;Manzi, Giorgio
莱托利是坦桑尼亚北方一个著名的古生物学地点，其杰出的记录包括世界上最早的人类足迹（366万年前），于1978年在G地点发现，被认为是南方古猿阿法种。在这里，我们报告了在莱托利新遗址S出土的人类足迹，并提到两个两足个体（S1和S2）在同一古地表上移动，与在遗址G记录的三个人类的方向相同。S1的身高估计值大大超过了以前重建的Au。从骨骼材料和足迹数据。结合对G遗址足迹的比较重新评估，这里收集的证据体现了上新世人类行为和形态记录的非常重要的补充。我们的研究结果与366万年前的一种两足古人类相当大的体型变化和可能的两性异形程度相一致。莱托利是坦桑尼亚北方著名的古生物学地点，其杰出的记录包括世界上最早的古人类足迹（366万年前），1978年在G地点发现，归属于南方古猿阿法种。在这里，我们报告了在莱托利新遗址S出土的人类足迹，并提到两个两足个体（S1和S2）在同一古地表上移动，与在遗址G记录的三个人类的方向相同。S1的身高估计值大大超过了以前重建的Au。从骨骼材料和足迹数据。结合对G遗址足迹的比较重新评估，这里收集的证据体现了上新世人类行为和形态记录的非常重要的补充。我们的研究结果是一致的相当大的身体大小的变化，并可能，在一个单一的物种的两足人早在366万年前的性二型性的程度。
Laetoli is a well-known palaeontological locality in northern Tanzania whose outstanding record includes the earliest hominin footprints in the world (3.66 million years old), discovered in 1978 at Site G and attributed to Australopithecus afarensis. Here, we report hominin tracks unearthed in the new Site S at Laetoli and referred to two bipedal individuals (S1 and S2) moving on the same palaeosurface and in the same direction as the three hominins documented at Site G. The stature estimates for S1 greatly exceed those previously reconstructed for Au. afarensis from both skeletal material and footprint data. In combination with a comparative reappraisal of the Site G footprints, the evidence collected here embodies very important additions to the Pliocene record of hominin behaviour and morphology. Our results are consistent with considerable body size variation and, probably, degree of sexual dimorphism within a single species of bipedal hominins as early as 3.66 million years ago.Laetoli is a well-known palaeontological locality in northern Tanzania whose outstanding record includes the earliest hominin footprints in the world (3.66 million years old), discovered in 1978 at Site G and attributed to Australopithecus afarensis. Here, we report hominin tracks unearthed in the new Site S at Laetoli and referred to two bipedal individuals (S1 and S2) moving on the same palaeosurface and in the same direction as the three hominins documented at Site G. The stature estimates for S1 greatly exceed those previously reconstructed for Au. afarensis from both skeletal material and footprint data. In combination with a comparative reappraisal of the Site G footprints, the evidence collected here embodies very important additions to the Pliocene record of hominin behaviour and morphology. Our results are consistent with considerable body size variation and, probably, degree of sexual dimorphism within a single species of bipedal hominins as early as 3.66 million years ago.