ostracoderm
Noun
Meaning
extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic
Source: WordNetSynonyms
lamprey
hyracotherium
Rhinocerotidae
paleotherium
quadrupedalism
coryphodon
nummulites
leptictidium
brachytherium
diplotherium
entelodon
eotherium
moeritherium
duerotherium
archaeotherium
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