1. Zhao, F. et al. Diversity and species abundance patterns of the early Cambrian (Series 2, Stage 3) Chengjiang Biota from China. Paleobiology 40, 50–69 (2014).
2. Zhu, M.-Y., Zhang, J.-M. & Li, G.-X. Sedimentary environments of the early Cambrian Chengjiang biota: sedimentology of the Yu’anshan Formation in Chengjiang County, eastern Yunnan. Acta Palaeontol. Sin. 40, 80–105 (2001).
3. Hu, S.-X. Taphonomy and palaeoecology of the early Cambrian Chengjiang Biota from eastern Yunnan, China. Berl. Palobiologische Abhandlungen 7 (2005).
4. Hou, X. et al. The Cambrian Fossils of Chengjiang, China. The Flowering of Early Animal Life 2nd edn (John Wiley & Sons, 2017).
5. Zhang, W.-T. & Hou, X.-G. Preliminary notes on the occurrence of the unusual trilobite Naraoia in Asia. Acta Palaeontol. Sin. 24, 591–595 (1985).