Placodermi

Thesaurus

Noun

Placodermi - extinct group of bony-plated fishes with primitive jawsclass PlacodermiCraniata, subphylum Craniata, subphylum Vertebrata, Vertebrata - fishes; amphibians; reptiles; birds; mammalsplacoderm - fish-like vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jawsclass - (biology) a taxonomic group containing one or more orders

Placodermi

[‚pla·kə′dər·mē] (paleontology) A large and varied class of Paleozoic fishes characterized by a complex bony armor covering the head and the front portion of the trunk.

Placodermi

a class of extinct fishes that lived during the Devonian. Their length was up to 5–6 m. The head and anterior part of the trunk were covered with an armor of bony plates of cutaneous origin. The plates were nodular and ridged. The head and trunk sections of the armor were articulated, and the jaws consisted of pointed bony plates. There were two subclasses: Arthrodira and Antiarchi (which included the genus Bothriole-pis).

REFERENCE

Drushits, V. V., and O. P. Obrucheva. Paleontologiia, 2nd ed. [Moscow] 1971.

MedicalSeeAphetohyoidea

Placodermi

Related to Placodermi: class Placodermi

noun

Synonyms for Placodermi

noun extinct group of bony-plated fishes with primitive jaws

Synonyms

class Placodermi

Related Words

Craniata
subphylum Craniata
subphylum Vertebrata
Vertebrata
placoderm
class

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