Problematic fossils are described from Late Ediacaran to Early Cambrian red sandstones of the Arumbera Sandstone, Grant Bluff, and Central Mount Stuart Formations in central Australia, within a new systematic classification of Vendobionta. Arumberia banksi has been one of the most problematic of Ediacaran fossils, at first considered a fossil and then a sedimentary or organo-sedimentary structure. Our re-examination of the type material and collection of new material reveals misconceptions about its topology: it was a recessive fossil on the bed top, protruding down from the counterpart overlying slab. The concave-up body was 3 mm thick and chambered above a diffuse lower surface, so not a sedimentary structure. Also re-evaluated is the discoid fossil Hallidaya brueri, here including “Skinnera brooksi’ as its upper surface. A new species (Noffkarkys storaaslii gen. et sp. nov.) is a multilobed frond with regular, fine, trapezoidal quilts. Three new records of Trepassia wardae, Dickinsonia costata, and Ernietta plateauensis are reported from the Arumbera and Grant Bluff Formations. Reevaluation of palaeomagnetic and biostratigraphic data suggest an hiatus of 26 million years at the Ediacaran–Cambrian boundary within the Arumbera Formation, but some of this missing time is filled by the Grant Bluff and Central Mount Stuart Formations.

在新的Vendobionta系统分类中，描述了有问题的化石，其中包括从Ediacaran晚期到澳大利亚中部Arumbera砂岩，Grant Bluff和Central Mount Stuart地层的早寒武纪红砂岩。Arumberia banki是最有问题的Ediacaran化石之一，最初被认为是化石，然后是沉积或有机沉积结构。我们对类型材料的重新检查和新材料的收集揭示了对其拓扑结构的误解：它是床顶上的隐性化石，从对应的上覆板向下突出。凹形体的厚度为3 mm，位于扩散下表面之上，因此不是沉积结构。盘状化石Hallidaya brueri也进行了重新评估，此处包括“ Skinnera brooksi”作为其上表面。一个新种（Noffkarkys storaaslii gen。et sp。nov。）是一个多裂叶，有规则的，细的梯形被子。从Arumbera和Grant Bluff地层中报告了三色的Tropassia wardae，Dickinsonia costata和Ernietta plateauensis。对古地磁和生物地层学数据的重新评估表明，在Arumbera组内的Ediacaran-Cambrian边界处存在2600万年的裂隙，但格兰特布拉夫组和斯图尔特山中部组填补了这一缺失的时间。