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Abstract: A large number of complete specimens together with numerous disarticulated sclerites of the eodiscinid trilobite Sinodiscus changyangensis Zhang inZhou et al., 1977 have been collected from the lower Cambrian Shuijingtuo Formation in Changyang, Hubei Province, South China. An ontogenetic series is established based on the immature and mature exoskeletons including the previously unknown...
Gaojiashania cyclus is a phylogenetically problematic tubular fossil that is only known from the late Ediacaran Gaojiashan Lagerstätte in southern Shaanxi Province, South China. It is a cm-sized tube that consists of a series of repeated units. Each unit consists of a rigid ring and an originally flexible bucket-shaped tube wall. Each tube maintains a constant diameter. The rigid ring elements typically...
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