a fossil mussel shell.
| 单词 | θ33135 | 
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Pelecypoda or Conchifera > 			[noun]		 > section Asiphonida > family Mytilidae > member of (mussel) > shell of > fossil (3)		 mussel-stone1660 a fossil mussel shell. musculite1681 A fossil shell resembling that of a mussel. mytilite1727 A fossil mussel shell. | 
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