As nouns the difference between placoderm and antiarch
is that placoderm is a member of an extinct group of fish with armored heads; the group lived during the silurian and devonian periods while antiarch is (zoology) any of a group of extinct placoderms of the order antiarchi .
placoderm
English
(Placodermi)
Noun
(
en noun)
A member of an extinct group of fish with armored heads; the group lived during the Silurian and Devonian periods.
See also
*Placodermi
antiarch
English
Noun
(
en noun)
(zoology) Any of a group of extinct placoderms of the order Antiarchi
Anagrams
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