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首页> 外文期刊>Estonian Journal of Earth Sciences >Taphonomy of the vertebrate bone beds from the Kl??nas fossil site, Upper Devonian T?“rvete Formation of Latvia
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Taphonomy of the vertebrate bone beds from the Kl??nas fossil site, Upper Devonian T?“rvete Formation of Latvia

机译：拉脱维亚上泥盆统T？rvete组的Kl？nas化石遗址的脊椎动物骨床的张相学

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>Combined sedimentological and taphonomical study of the siliciclastic sequence of the T?“rvete Formation in the stratotypical area was aimed at revealing the formation of the three oryctocoenoses discovered and related structural and textural features of the deposits, as well as at detailed observation of the taphonomical peculiarities of the obtained palaeontological material. The >fossil vertebrate assemblage is represented by 14 taxa comprising placoderms, acanthodians, sarcopterygians and actinopterygians. The three oryctocoenoses, first recognized in 2010, differ in the proportions of repeatedly buried material, in the number and degree of preservation of small and fragile skeletal elements, as well as in the evaluated current velocity and the transportation distance. Sedimentary concentrations of marine vertebrate remains, dominated by the antiarchs Bothriolepis ornata and B. jani, have been formed under the influence of fluvial and tidal processes in the shallow-water environment, deltaic or estuarine settings. Elongated placoderm and sarcopterygian bones are probably better indicators of the palaeoflow direction than acanthodian spines or sarcopterygian teeth.
机译：>平流层地区T？rvete组硅质碎屑序列的沉积学和沉积学研究相结合，旨在揭示所发现的三种早古生代表壳岩的形成以及相关的构造和质地特征，并进行详细观察的古生物学材料的术语学特性。化石脊椎动物群由14个类群组成，包括编轴动物，棘皮动物，翼翅目和放线翅目。这三种早于2010年被认可的兽交突变体，在重复掩埋物质的比例，小而易碎的骨骼元素的保存数量和保存程度以及评估的当前速度和运输距离方面都存在差异。海洋脊椎动物遗骸的沉积物浓度较高，以反弓虫 Bothriolepis ornata 和 B为主。 jani 是在浅水环境，三角洲或河口环境中河流和潮汐过程的影响下形成的。细长的编轴虫和翅翅目骨骼可能比古棘刺或翅翅目牙齿更好地指示古生物流向。

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