Environmental controls and distribution of Late Jurassic neoselachians from the Iberian Basin (NE Spain) in the European context

化石neoselachians……主要是通过他们的牙齿来识别的，因此，随着时间的推移，新塞拉基亚人的进化和生态仍然是模糊的。了解晚侏罗世新塞拉基亚动物的多样性是我们了解其早期进化史和辐射的基础。尽管新塞拉亚动物群在侏罗纪发育多样，但该分类群的古环境特异性通常被忽视。该项目的重点是西班牙东北部的晚侏罗世新塞拉基亚动物。从平台内一系列相的广泛采样将允许评估盆地内新塞拉亚鲨鱼和鳐的古环境分布，也可以重建欧洲晚侏罗世新塞拉亚动物群之间的动物交换，并区分Tethyal和北方的影响。地球化学示踪分析…对一系列不同相和年龄的选定牙齿进行研究将有助于建立地层和古生态框架。研究结果将与其他晚侏罗世新塞拉世组合进行比较，重建其总体多样性格局，并以此作为现代新塞拉世分布的参考。

Fossil neoselachians... are primarily recognized by their teeth and, consequently, the evolution and ecology of neoselachians through time is still obscure. Knowledge of Late Jurassic neoselachians diversity is fundamental to our understanding of their early evolutionary history and radiation. Despite the development of diverse neoselachian faunas within the Jurassic, the palaeonvironmental specificity of the taxa has generally been ignored. The project focuses on Late Jurassic neoselachians from NE Spain. Extensive sampling from a range of facies within the platform will allow to asses the palaeoenvironmental distribution of neoselachian sharks and rays within the basin but also to reconstruct faunal exchanges between European Late Jurassic neoselachian faunas and disciminate Tethyal and boreal influences. Geochemical tracer analyses... performed on selected teeth from a range of different facies and ages will help establishing a stratigraphic and palaeoecological framework. The results will be compared to other Late Jurassic neoselachian assemblages and general diversity patterns will be reconstructed, which, in turn, can be used as proxies for modern neoselachian distribution.