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Temporal range: Lower Cambrian
Scientific classification e
Kingdom: Animalia
Phylum: incertae sedis
Class: Coeloscleritophora
Genus: Cambrothyra
  • C. ampulliformis Qian and Zhang, 1983
  • ?Mirabichitina (nomen nudum) Yand, He, and Deng, 1983
  • ?Nanjiangochitina (nomen nudum) Yang, He, and Deng, 1983
  • ?Mirabifolliculus Yang and He, 1984
  • ?Nanjiangofolliculus Yang and He, 1984
  • Acatomus Duan, 1986
  • Clinopa Duan, 1986
  • Horridomus Duan, 1986.
  • Hubeitesta Duan, 1986
  • Situlitesta Duan, 1986
  • Ovitesta Duan, 1986
  • Trymitesta Duan, 1986
  • Pollofructus Geng and Zhang, 1987
  • Globifructus Geng and Zhang, 1987
  • Parahorridomus Duan, Cao, and Zhang, 1993
  • Laxicavia Duan, Cao, and Zhang, 1993
  • Turbinella Duan, Cao, and Zhang, 1993
  • Cyphinites Duan, Cao, and Zhang, 1993
  • Tympanites Duan, Cao, and Zhang, 1993
  • Lapistamnia Duan, Cao, and Zhang, 1993

Cambrothyra (not to be confused with Cambrorhytium) is a Lower Cambrian coeloscleritophoran from China. The fossils are hollow cones with porous walls that had an originally fibrous aragonitic mineralogy. These conical sclerites were generally not connected to other sclerites; only occasionally are they paired or twinned.[1] The genus comprises the sole species C. ampulliformis.[1]


  1. ^ a b Moore, J. L.; Porter, S. M.; Steiner, M.; Li, G. (2010). "Cambrothyra ampulliformis, an unusual Coeloscleritophoran from the Lower Cambrian of Shaanxi Province, China". Journal of Paleontology. 84: 1040. doi:10.1666/09-091.1.