Bothriolepis
Bothriolepis was a widespread , abundant and diverse genus of antiarch placoderms that lived during the Middle to Late Devonian period of the Paleozoic Era . 
<triplet> Middle <subj> Paleozoic Era <obj> part of <triplet> Late Devonian <subj> Paleozoic Era <obj> part of <triplet> Paleozoic Era <subj> Middle <obj> has part <subj> Late Devonian <obj> has part