Ac·ro·tre·ta | \ˌa-krō-ˈtrē-tə\

Definition of Acrotreta 

: a genus of brachiopods known from small fossil shells common in Cambrian rocks

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First Known Use of Acrotreta

1851, in the meaning defined above

History and Etymology for Acrotreta

New Latin, from acr- + -treta (from Greek trētos perforated)

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The first known use of Acrotreta was in 1851

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lying above or upon

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