Jawless fishes (Agnatha)

General data

Main name: Jawless fishes

Classification

Description

Agnatha is a superclass of jawless fishes. They are considered the most primitive vertebrates because they lack several key characteristics found in other vertebrates: they have no jaws (their mouth is round and sucker-like), no paired fins or limbs, and no true vertebrae (although they do possess a notochord). The oldest fossil agnathans date back to the Cambrian period. Today, only two groups of these ancient fishes survive: the lampreys and the hagfishes, together comprising about 120 living species.

Jawless fishes (Agnatha)

General data

Classification

Description

Classes

Hagfishes (Myxini)

Lampreys (Petromyzonti)

Taxonomy of Fishes

Jawless fishes (Agnatha)

General data

Classification

Description

Classes

Hagfishes (Myxini)

Lampreys (Petromyzonti)

Taxonomy of Fishes

Tag Your Catch and Win a Twin Power!

Post your catch and get a chance to win the Shimano Twin Power XD 4000 PG!

Tag Your Catch and
Win a Twin Power!