The “Backed Artefact Symmetry Index” (BASI) provides a measure with which to describe geometric variation in Australian backed artefacts, and Peter Hiscock has suggested that desert versions of this artefact type will be more symmetrical than their coastal counterparts. The re‐excavated Serpent's Glen (Karnatukul) site and nearby site of Wirrili have produced a large assemblage of backed artefacts. These Western Desert assemblages allow for the testing of BASI. The backed artefacts demonstrate significantly more variability than predicted, demonstrating that all technological debates benefit from larger well‐dated assemblages. The signalling information observed in these sites’ pigment art repertoires, combined with this versatility in the toolkits, increases our understanding of the complexity of middle and late Holocene highly mobile foragers in the Australian arid zone.

中文翻译：

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测试澳大利亚西部沙漠中人工支持物生产的对称性，变异性和时间顺序的预测

“后备人工制品对称性指数”（BASI）提供了一种描述澳大利亚后备人工制品几何变化的量度，彼得·希斯科克（Peter Hiscock）提出，这种人工制品的沙漠版本将比沿海版本更为对称。经过重新挖掘的蛇的格伦（Karnatukul）遗址和维里里附近的遗址产生了大量的有背文物。这些西部沙漠组件可用于BASI的测试。支持的文物比预期的具有更大的可变性，表明所有技术辩论都受益于大型的妥善组合。在这些站点的颜料艺术库中观察到的信号信息，再加上工具包中的这种多功能性，