Data from: Mollusks from the upper Shackleton Limestone (Cambrian Series 2), Central Transantarctic Mountains, East Antarctica

An assemblage of Cambrian Series 2, Stages 3–4 conchiferan mollusks from the Shackleton Limestone, Transantarctic Mountains, East Antarctica is formally described and illustrated. The fauna includes one bivalve, one macromollusk and ten micromollusks, including the first description of the species Xinjispira simplex outside North China. The new fauna shows some similarity to previously described micromollusks from lower Cambrian glacial erratics from the Antarctic Peninsula. The fauna, mainly composed of steinkerns, is relatively low diversity, but the presence of diagnostic taxa, including helcionelloid Mackinnonia rostrata, bivalve Pojetaia runnegari, cambroclavid Cambroclavus absonus and bradoriid Spinospitella coronata as well as the botsfordiid brachiopod Schizopholis yorkensis in the overlying Holyoake Formation correlates the succession to the Dailyatia odyssei Zone (Cambrian Stage 3–4) in South Australia.

Usage Notes
Supplementary file 1 Occurrences of species left in open nomenclatureThis files lists published material included in the taxa Davidonia corrugata, Xianfengella yatesi, Pelagiella subangulata and Anabarella australis. These have been included here for convenience as they are referred to in the main text, but not typically included in systematics sections for specimens with only tentative affinities for previously described species.

本文对采自东南极洲横贯南极山脉（Transantarctic Mountains）的沙克尔顿灰岩（Shackleton Limestone）中产出的寒武系第二统（Cambrian Series 2）第3-4阶（Stages 3–4）具壳软体动物（conchiferan mollusks）组合进行了正式描述与图示。该动物群包含1种双壳类、1种大型软体动物（macromollusk）以及10种微型软体动物（micromollusk），其中包括华北地区之外首次报道的Xinjispira simplex。本新发现的动物群与此前在南极半岛下寒武统冰漂砾中描述的微型软体动物群具有一定相似性。该动物群主要由壳模铸型（steinkerns）组成，物种多样性相对较低，但上覆的霍利约克组（Holyoake Formation）中产出的多个鉴定性分类群——包括太阳女神螺类（helcionelloid）Mackinnonia rostrata、双壳类Pojetaia runnegari、寒武杆形类（cambroclavid）Cambroclavus absonus、布拉迪介类（bradoriid）Spinospitella coronata，以及博茨福德贝科（botsfordiid）腕足类Schizopholis yorkensis——将该地层序列与南澳大利亚的Dailyatia odyssei带（寒武系第3-4阶）进行了地层对比。

使用说明
补充文件1：开放式命名法下物种的产出记录
本文件列出了归属于Davidonia corrugata、Xianfengella yatesi、Pelagiella subangulata及Anabarella australis的已发表标本材料。此处收录此类群仅为方便行文，因正文提及该类群，但对于仅具有与已描述物种疑似亲缘关系的标本，通常不会将其纳入系统学章节中。