Opercula of hyoliths and operculum-like fossils from the Lower Cambrian Yuertus Formation, Xinjiang

Y. Qian, G. Z. Yin, and B. Xiao

2000

Article

Acta Micropalaeontologica Sinica 17(4):404-415

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Taxa discussed in this work:

• Conotheca rotunda
• Xystritheca
• Xystritheca crenulata

Taxonomy:

• Conotheca rotunda belongs to Conotheca - Qian et al. (2000)
• Xystritheca belongs to Turcuthecidae - Qian et al. (2000)
• Xystritheca crenulata belongs to Xystritheca - Qian et al. (2000)