acanthodian Definition
a group of extinct fish that lived from the Silurian to the Permian periods, characterized by spiny fins and scales.
Using acanthodian: Examples
Take a moment to familiarize yourself with how "acanthodian" can be used in various situations through the following examples!
Example
The acanthodians were one of the earliest groups of jawed fishes.
Example
Acanthodians had a distinctive spiny fin structure.
Example
The scales of acanthodians were covered in enamel-like material.
Phrases with acanthodian
Example
The spiny shark was one of the most successful acanthodian groups.
a type of scale found on acanthodians, characterized by a hard, enamel-like covering
Example
The enamel-like covering on acanthodian scales made them resistant to damage.
a type of fin found on acanthodians, characterized by spines or sharp rays
Example
The spiny structure of acanthodian fins may have been used for defense or to attract mates.
Origins of acanthodian
from Greek 'akantha', meaning 'thorn', and 'odous', meaning 'tooth'
Summary: acanthodian in Brief
An 'acanthodian' [əˈkanθədiən] is a group of extinct fish that lived from the Silurian to the Permian periods. They are characterized by spiny fins and scales, with distinctive features like the enamel-like covering on their scales. Acanthodians are sometimes called 'spiny sharks' due to their resemblance to modern sharks. The spiny structure of their fins may have been used for defense or to attract mates.
