P. V. Oliveira, M. S. Viana, G. Cardoso, Gustavo Batista Matos Freire
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引用次数: 0
摘要
巴西最近的原龙类来自更新世末期的北美洲。这项工作提出并描述了在巴西东北部的一个洞穴沉积物中发现并收集的第一个食肉动物记录(Procyonidae Gray, 1825)。这些藏品是在塞埃尔州Ubajara国家公园(Parque Nacional de Ubajara) Gruta do Urso Fóssil的一次挖掘任务中发现的。所研究的物质是在0.8米深的地方发现的。利用热释光和光激发发光方法,该材料的年代为±8450年BP。该动物由一个具有完整右M2的上颌骨碎片代表,可归因于Procyon cancrivorus (Cuvier, 1798)。这一物种在该地区的存在表明,该地区的环境动态至少在过去的8000年里一直是和谐和受保护的。
PROCYONIDAE (CARNIVORA) IN A CAVE IN THE PARQUE NACIONAL DE UBAJARA, NORTHEAST OF BRAZIL (EOHOLOCENE)
The most recent procyonids of Brazil came from North America at the end of the Pleistocene. This work presents and describes the first carnivore record (Procyonidae Gray, 1825) found in a cave deposit and collected from dated sediments in northeastern Brazil. The collection was made during an excavation mission at the Gruta do Urso Fóssil, Parque Nacional de Ubajara, State of Ceará. The studied material was found at a depth of 0.8 m. Using the Thermoluminescence and Optically Stimulated Luminescence methods, the material was dated to ± 8,450 years BP. The animal is represented by a maxilla fragment with a complete right M2 and can be attributed to Procyon cancrivorus (Cuvier, 1798). The presence of this species in this area suggests that the environmental dynamics of the region has been harmonious and conserved for, at least, the last 8,000 years.