Preliminary paleoecological insights from the Pliocene avifauna of Kanapoi, Kenya: Implications for the ecology of Australopithecus anamensis
Preliminary paleoecological insights from the Pliocene avifauna of Kanapoi, Kenya: Implications for the ecology of Australopithecus anamensis
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DOI：
10.1016/j.jhevol.2017.08.007
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发表时间：
2020-03-01
影响因子：
3.2
通讯作者：
Field, Daniel J.
中科院分区：
文献类型：
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作者：
Field, Daniel J.
来自上新世人类居住地卡纳波伊 (Kanapoi) 的鸟类化石遗骸包含超过 100 个元素，代表至少 10 个鸟类科，其中包括先前未描述的元素，称为“巨型”上新世鹳鹳 Leptoptilos cf.法尔科内里。 Kanapoi 鸟类化石的分类组成揭示了一个含有大量水生成分的组合，证实了该地区紧邻大型缓慢移动水体的地质证据。卡纳波伊鸟类高级分支的分类组成和相对丰度与埃塞俄比亚下阿拉米斯地区稍古老（类似于 4.4 Ma 与 4.2 Ma）的鸟类区系形成鲜明对比，后者被解释为代表了远离水源的中生林地古环境。总体而言，Kanapoi 鸟类动物群的分类组成与中新世洛萨加姆 (Lothagam) 类人猿栖息地的分类组成相似（尽管 Kanapoi 鸟类更加多样化），并且 Kanapoi 鸟类动物群的水生特征支持这样的观点，即卡纳波伊南方古猿 (Australopithecus anamensis) 经历的环境条件与地猿 (Ardipithecus ramidus) 经历的环境条件明显不同。 阿拉米斯。此外，卡纳波伊地区相对丰富的鹳鹳（Leptoptilos）遗骸可能表明，全进化支人类与兼性食腐鹳之间存在着长期的共生关系。来自附近化石地点（例如 Nachukui 地层）的其他鸟类遗骸，年龄从 3.26 Ma 到 0.8 Ma 不等，揭示了该地区水生鸟类的长期存在。 (C) 2017 Elsevier Ltd. 保留所有权利。
Fossil bird remains from the Pliocene hominin-bearing locality of Kanapoi comprise >100 elements representing at least 10 avian families, including previously undescribed elements referred to the 'giant' Pliocene marabou stork Leptoptilos cf. falconeri. The taxonomic composition of the Kanapoi fossil avifauna reveals an assemblage with a substantial aquatic component, corroborating geological evidence of this locality's close proximity to a large, slow-moving body of water. Both the taxonomic composition and relative abundance of avian higher-level clades at Kanapoi stand in stark contrast to the avifauna from the slightly older (similar to 4.4 Ma vs. 4.2 Ma) hominin-bearing Lower Aramis Member of Ethiopia, which has been interpreted as representing a mesic woodland paleoenvironment far from water. In general, the taxonomic composition of the Kanapoi avifauna resembles that from the Miocene hominoid-bearing locality of Lothagam (though Kanapoi is more diverse), and the aquatic character of the Kanapoi avifauna supports the idea that the environmental conditions experienced by Australopithecus anamensis at Kanapoi were markedly different from those experienced by Ardipithecus ramidus at Aramis. Additionally, the relative abundance of marabou stork (Leptoptilos) remains at Kanapoi may suggest a long-standing commensal relationship between total-clade humans and facultatively scavenging marabous. Additional avian remains from nearby fossil localities (e.g., the Nachukui Formation), ranging in age from 3.26 to 0.8 Ma, reveal the long-term persistence of an aquatic avifauna in the region. (C) 2017 Elsevier Ltd. All rights reserved.