acanthocephalan

noun 0.650

agnathan

noun 0.648

actinopterygian

noun 0.616

placoderm

noun 0.599

acanthoma

noun 0.595

acanthus

noun 0.581

conodont

noun 0.581

echinoid

noun 0.557

gadoid

noun 0.552

cyclostome

noun 0.549

coelacanth

noun 0.548

chondrichthyan

noun 0.546

acanthosis

noun 0.542

archaeon

noun 0.530

ornithischian

noun 0.527

bony fish

noun 0.525

crocodilian

noun 0.524

ctenoid

noun 0.523

ichthyosaurus

noun 0.521

amphioxus

noun 0.521

urodele

noun 0.518

lungfish

noun 0.517

echinoderm

noun 0.517

batrachian

noun 0.514

anthropoid

noun 0.513

ichthyosaur

noun 0.511

nautiloid

noun 0.509

anuran

noun 0.507

dendroid

noun 0.507

iguanodon

noun 0.506

ankylosaur

noun 0.502

cyclopoid

noun 0.502