Am·​phi·​ox·​i·​des | \-ˌdēz\

Definition of Amphioxides 

: a formerly recognized genus of pelagic lancelets mistakenly based on larvae of the genus Asymmetron

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First Known Use of Amphioxides

1895, in the meaning defined above

History and Etymology for Amphioxides

New Latin, from Amphioxus + Greek -idēs (patronymic suffix)

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The first known use of Amphioxides was in 1895

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