placoderm

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Definitions from WordNet

Noun placoderm has 1 sense

placoderm - fishlike vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws
--₁ is a kind of aquatic vertebrate
--₁ is a member of Placodermi, class Placodermi

Definitions from the Web

Placoderm

Description

A placoderm is a class of extinct armoured fish that lived during the Devonian period. They have a unique bony external plate covering their head and upper body, making them one of the first groups of vertebrates to develop jaws.

Senses and Usages

1. Noun: Placoderm

Definition: An extinct class of armoured fish that flourished during the Devonian period.

Example sentence: The fossils of placoderms found in sedimentary rocks provide valuable clues about the early evolution of jawed vertebrates.

2. Adjective: Placoderm

Definition: Relating to or characteristic of placoderms.

Example sentence: The placoderm scales were incredibly durable and offered effective protection against predators.

3. Adjective: Placodermic

Definition: Resembling or related to placoderms.

Example sentence: The placodermic armor found on the fossil was beautifully preserved, showcasing intricate patterns and textures.

4. Local Usage: Placoderm

Definition: In certain local communities, placoderm can refer to a local dish consisting of grilled fish topped with a special herb blend.

Example sentence: When visiting the coastal town, be sure to try their famous placoderm, it's a delightful gastronomic experience!