Occurrence of bite marks on Tuzoia (Arthropoda) from the early Cambrian Guanshan biota in Kunming, Yunnan
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Abstract:
First fossil record of bite marks on the bivalved arthropod Tuzoia is reported from the Guanshan biota (Stage 4, Series 2, Cambrian) in Yunnan Province, South China. These bite marks, probably produced by predators such as radiodonts or redlichid trilobites, are interpreted as recovery of unsuccessful predatory attacks. The new discovery shows that Tuzoia were preyed upon by larger predators, indicating the existence of a complex food chain in the early Cambrian. This report provides new information in understanding the ecological niche of Tuzoid arthropods and the food web structure of the early Cambrian marine ecosystems.
