plural noun Thel·o·don·ti·dae \ˌtheləˈdäntəˌdē\

Definition of Thelodontidae

  1. :  a family of Devonian and Silurian ostracoderms that is included among the Heterostraci or isolated in the order Coelolepida

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Origin and Etymology of thelodontidae

New Latin, from Thelodont-, Thelodus, type genus + -idae

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to criticize severely

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