Placodermi

Arthrodira † Brindabellaspida † Petalichthyida † Phyllolepida † Ptyctodontida † Rhenanida † Acanthothoraci † ?Pseudopetalichthyida † The first identifiable placoderms appear in the fossil record during the late Llandovery epoch of the early Silurian. The various groups of placoderms were diverse and abundant during the Devonian, bu...
Found on http://en.wikipedia.org/wiki/Placodermi

Placodermi

• (n. pl.) An extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys, and Coccosteus.
Found on http://thinkexist.com/dictionary/meaning/placodermi/

Placodermi

class Placodermi noun extinct group of bony-plated fishes with primitive jaws
Found on https://www.encyclo.co.uk/local/20974

Placodermi

Plac`o·der'mi noun plural [ New Latin , from Greek ..., ..., a tablet + ... skin.] (Paleon.) An extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys , and Coccosteus .
Found on http://www.encyclo.co.uk/webster/P/98

Placodermi

[n] - extinct group of bony-plated fishes with primitive jaws
Found on http://www.webdictionary.co.uk/definition.php?query=Placodermi
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