Temporal range: 145.5–0 Ma
Pacific oyster, Crassostrea gigas
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Ostreoida
Family: Ostreidae
Genus: Crassostrea

See text.

  • Ostrea (Crassostrea) Dall, 1909
Crassostrea gigantissima (Finch, 1824) from the Eocene of Texas.
Crassostrea gigantissima (Finch, 1824) right valve interior (Eocene of Texas).

Crassostrea is a genus of true oysters (family Ostreidae) containing the most important oysters used for food.



The genome of Crassostrea gigas has been recently sequenced [2] revealing an extensive set of genes that enable it to cope with environmental stresses.



  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Taxon list for Crassostrea. World Register of Marine Species, accessed on 1 March 2012.
  2. 1 2 Zhang, G.; Fang, X.; Guo, X.; Li, L.; Luo, R.; Xu, F.; Yang, P.; Zhang, L.; Wang, X.; Qi, H.; Xiong, Z.; Que, H.; Xie, Y.; Holland, P. W. H.; Paps, J.; Zhu, Y.; Wu, F.; Chen, Y.; Wang, J.; Peng, C.; Meng, J.; Yang, L.; Liu, J.; Wen, B.; Zhang, N.; Huang, Z.; Zhu, Q.; Feng, Y.; Mount, A.; Hedgecock, D. (2012). "The oyster genome reveals stress adaptation and complexity of shell formation". Nature. 490 (7418): 49–54. doi:10.1038/nature11413. PMID 22992520.
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