Discussion of “Permian—Triassic vertebrate footprints from South Africa: Ichnotaxonomy, producers and biostratigraphy through two major faunal crises” by Marchetti, L., Klein, H., Buchwitz, M., Ronchi, A., Smith, R.M.H., DeKlerk, W.J., Sciscio, L., and Gr
Discussion of “Permian—Triassic vertebrate footprints from South Africa: Ichnotaxonomy, producers and biostratigraphy through two major faunal crises” by Marchetti, L., Klein, H., Buchwitz, M., Ronchi, A., Smith, R.M.H., DeKlerk, W.J., Sciscio, L., and Gr
复制标题
讨论“来自南非的二叠纪——三叠纪脊椎动物足迹：两次主要动物危机中的生物分类学、生产者和生物地层学”作者：Marchetti, L.、Klein, H.、Buchwitz, M.、Ronchi, A.、Smith，
DOI：
10.1016/j.gr.2019.08.003
复制
发表时间：
2020
影响因子：
6.1
通讯作者：
Neveling, Johann
中科院分区：
文献类型：
--
作者：
Gastaldo, Robert A.;Neveling, Johann
南非卡鲁盆地的一个新设计的三等分分区是基于博福特组的中二叠世（Wordian/Capitanian）至下三叠世（据报道为Indian）岩石的一些脊椎动物足迹。据报道，最年轻的足迹组合（FA III）出现在Palingkloof段最低的三叠纪岩石中。其中一个采集点，据报道有七条足迹，贝瑟尔农场，是一个典型的南非地方，一些作者把二叠纪末灭绝事件，巧合的是，以脊椎动物为基础的陆地二叠纪-三叠纪边界。然而，公布的贝瑟尔农场的GPS坐标表明，这些轨道起源于北阿利瓦尔镇附近的Burgersdorp地层的暴露。这里的露头被分配到Cynognathus组合带，并指示中三叠世的年龄分配。此外，我们警告使用任何小的时间或空间限制的数据集，这是严重有限的效用，在广泛的概括有关古环境或古生态的解释。
A newly devised tripartite subdivision of the Karoo Basin, South Africa, is based on a number of vertebrate-trackways spanning the Middle Permian (Wordian/Capitanian) to Lower Triassic (reportedly Induan) rocks of the Beaufort Formation. The youngest Footprint Assemblage (FA III) is reported to occur in the lowermost Triassic rocks of the Palingkloof Member. One collection site from which seven trackways are reported, Bethel farm, is a classic South African locality where some authors place the end-Permian extinction event and, coincidentally, the vertebrate-based terrestrial Permian—Triassic Boundary. Published GPS coordinates for the Bethel farm site, though, indicate that these trackways originate from exposures of the Burgersdorp Formation near the town of Aliwal North. Outcrops here are assigned to theCynognathusAssemblage Zone, and indicate a Middle Triassic age assignment. In addition, we caution the use of any small temporally or spatially restricted dataset, which is of severely limited utility, in making broad generalizations about paleoenvironmental or paleoecological interpretations.