protaspis
noun
pro·tas·pis
\-pə̇s\
Definition of protaspis
protaspides
\-pəˌdēz\: the minute discoid or oval first larval form of a trilobite that has a well-marked axial lobe, large head region, and but little segmentation
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Origin and Etymology of protaspis
New Latin, from prot- + -aspis
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