貴州畢節(jié)麻窩口洞與智人伴生的長鼻類化石
發(fā)布時間:2018-02-27 08:07
本文關(guān)鍵詞: 長鼻類 智人 麻窩口洞 貴州畢節(jié) 更新世 出處:《人類學(xué)學(xué)報》2017年03期 論文類型:期刊論文
【摘要】:最近在貴州畢節(jié)麻窩口洞發(fā)現(xiàn)了3枚古人類牙齒化石和伴生的哺乳動物群。其中,古人類牙齒經(jīng)初步研究可歸入解剖學(xué)上的現(xiàn)代人,而與古人類相伴的大、小哺乳動物化石,經(jīng)初步鑒定共計8目20科43屬53種。本文系統(tǒng)記述了該動物群中大哺乳動物的典型代表——長鼻類化石,共2屬2種:東方劍齒象(Stegodon orientalis)和亞洲象(Elephas maximus)。麻窩口洞的長鼻類缺失我國南方早更新世的典型種類——中華乳齒象(Sinomastodon)和華南劍齒象(Stegodon huananensis),具有從典型的中更新世大熊貓-劍齒象動物群(Ailuropoda-Stegodon fauna)向晚更新世亞洲象動物群(Asian elephant fauna)過渡的特征。依動物群的性質(zhì)和地貌地層的特征,畢節(jié)麻窩口洞的智人及伴生動物群的地質(zhì)時代很可能為中更新世晚期或晚更新世早期,這與堆積物的光釋光年代測定的初步結(jié)果(距今約11.2-17.8萬年)基本吻合。麻窩口洞東方劍齒象與亞洲象的組合明顯具有東洋界亞熱帶動物群的特點,指示溫暖潮濕的氣候,這些長鼻類與智人等生存于近水的森林和灌叢中,并鑲嵌了一些草地。
[Abstract]:Recently, three paleohuman tooth fossils and associated mammals were found in Mawokou cave, Bijie, Guizhou. Among them, paleo human teeth can be classified as anatomical modern humans, while large and small mammal fossils concomitant with paleohumans. A total of 53 species belonging to 43 genera, 43 genera, 20 families, 8 orders, have been preliminarily identified. There are 2 genera and 2 species: Stegodon orientalisis) and Elephas maximusus. Typical species of early Pleistocene in southern China, Sinomastodon, and Stegodon huananensis of southern China, have been found in Mawaguchi, China, and Stegodon Huananensis, which is a typical Middle Pleistocene giant panda. -characteristics of the transition from Ailuropoda-Stegodon fauna to the late Pleistocene Asian elephant fauna, depending on the nature of the fauna and the characteristics of the geomorphological strata, The geological age of the Homo sapiens and associated fauna in Mawokou cave, Bijie, is probably late Middle Pleistocene or early late Pleistocene. This basically coincides with the preliminary results of the photoluminescence dating of the deposits (about 11.2-17.8 million years ago). The combination of the eastern saber tooth and the Asian elephant in Mawukou is obviously characterized by the subtropical fauna of the Eastern Ocean, indicating a warm and humid climate. These long noses and Homo sapiens live in near-water forests and thickets, and inlay grasslands.
【作者單位】: 中國科學(xué)院古脊椎動物與古人類研究所中國科學(xué)院脊椎動物演化與人類起源重點實驗室;中國科學(xué)院大學(xué);貴州省文物考古研究所;貴州省博物館;
【基金】:中國科學(xué)院古生物化石發(fā)掘與修理專項經(jīng)費;中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項(XDPB05)資助 國家自然科學(xué)基金項目(41672022)
【分類號】:Q915
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