Ceph·​a·​las·​pis | \-pə̇s\

Definition of Cephalaspis 

: a genus (the type of the family Cephalaspidae) of Devonian ostracoderms having the head covered by a flattened shield rounded in front and prolonged into posteriorly directed lateral points and the eyes close together in the middle of the head shield — see cephalaspida

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History and Etymology for Cephalaspis

New Latin, from cephal- + -aspis

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