a fossil oyster of the genus Gryphaea (presumably so named in allusion to the use of powdered oyster shell as a remedy for ague).
| 单词 | θ33112 | 
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Pelecypoda or Conchifera > 			[noun]		 > section Asiphonida > family Ostreidae > fossil of genus Gryphoea (3)		 ague shell1708 a fossil oyster of the genus Gryphaea (presumably so named in allusion to the use of powdered oyster shell as a remedy for ague). hawk's-bill1708 (See quot. 1708.) boat oyster1816 an oyster of the extinct Mesozoic genus Gryphaea (family Gryphaeidae), in which the mollusc occupied a distinctive large, curved left valve with… | 
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