Data from: Himalayan Cambrian brachiopods

A synoptic analysis of previously published material and new finds reveals that Himalayan Cambrian brachiopods can be referred to 18 genera, of which 17 are considered herein. These contain 20 taxa assigned to species, of which five are new: Eohadrotreta haydeni, Aphelotreta khemangarensis, Hadrotreta timchristiorum, Prototreta? sumnaensis and Amictocracens? brocki. Well-preserved topotype material from the classic Parahio Valley section is described for three species that have not previously been illustrated photographically. A biostratigraphical scheme based on Cambrian brachiopod occurrence is integrated with that recently proposed for trilobites. Regional correlations based on shared taxa within and across Himalayan lithotectonic belts demonstrate that erosion of Cambrian rocks in the Kurgiakh orogeny in the Parahio Valley removed little of the Parahio Formation and that all of the fossil-bearing lithotectonic zones share similar late early Cambrian brachiopods, suggesting regional faunal continuity at the time. Palaeobiogeographical analysis of the Cambrian brachiopod faunas from the Himalaya shows that they occupied a marginal position of the Australasian segment of Gondwana.通过对已发表研究资料与新发现化石的综合分析，喜马拉雅地区寒武纪腕足类可归入18个属，本文涉及其中17个属。 该类群包含20个已定种级分类单元，其中5个为新发现物种：Eohadrotreta haydeni、Aphelotreta khemangarensis、Hadrotreta timchristiorum、Prototreta? sumnaensis以及Amictocracens? brocki。 针对此前从未有过摄影插图记录的3个物种，本文对采自经典帕拉希奥谷（Parahio Valley）剖面的保存完好的模式产地标本进行了详细描述。 基于寒武纪腕足类产出特征构建的生物地层划分方案，与近期提出的三叶虫生物地层方案实现了整合。 基于喜马拉雅岩石构造带内外共有分类单元开展的区域对比研究显示：帕拉希奥谷库尔吉阿克造山作用对区内寒武纪岩石的侵蚀几乎未对帕拉希奥组（Parahio Formation）造成显著剥蚀；所有含化石的岩石构造带均拥有相似的早寒武世晚期腕足类动物群，暗示当时存在区域性的动物群演化连续性。 对喜马拉雅地区寒武纪腕足类动物群的古生物地理学分析表明，该类群处于冈瓦纳（Gondwana）大陆澳大拉西亚段的边缘位置。