order Ostracodermi
extinct group of armored jawless vertebrates; taxonomy is not clear • Syn: Ostracodermi • Hypernyms: animal order • Member Holonyms: Agnatha, superclass Agnatha • Member Meronyms: ostracoderm, Heterostraci, suborder Heterostraci, Osteostraci, suborder Osteostraci, Cephalaspida, suborder Cephalaspida
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