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Agnatha is a superclass of fish that are characterised by their lack of a jaw as opposed to the presence of a jaw found in most modern fish. The surviving two classes are hagfish and lampreys.

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Is the cartilaginous fish is the most primitive group of fish?

It is as primitive as a cave man.


To which class do most fish belong to?

I have just been learning about the phylum 'Chordata' in class. Most fish are in the class called 'Fish'. Pretty simple, and i hope you find this useful!


In what clade do most modern fish belong to?

Most of the fish belong to the class called class Chrodata. Examples of this type of fish include tilapia, Nile perch and the cat fish.


What is the difference between primitive fish and the most advanced types?

Primitive fish are typically simpler in structure and behavior, with characteristics like cartilaginous skeletons and lack of jaws. In contrast, more advanced fish have evolved adaptations like bony skeletons, jaws, and specialized sensory organs for improved survival and reproduction. They also exhibit more complex behaviors and reproductive strategies compared to primitive fish.


What class of vertebrate has the most species?

Osteichthyes, the bony fish class, has over 30,000 species.


What is the most primitive bacteria called?

The most primitive bacteria are known as cyanobacteria, also called blue-green algae. They are often considered to be some of the earliest forms of life on Earth and are capable of photosynthesis.


The most primitive vertebrates are members of the group of a jawless fishes b amphibians c artilaginous fish d birds e bony fish?

A: jawless fish


What are the animals that do not mate bodily?

All primitive soft-bodied animals that live in the sea. Most fish, most arthropods and quite a few insects.


What is the fourth chamber of a fish's heart known as?

Most fish have only two heart chambers.Amphibians and some types of primitive fish have four heart chambers, and the fourth one of these is known as the conus arteriosus.


What are the most primitive fish?

The most primitive fish are typically represented by the jawless fish known as agnathans, which include species like lampreys and hagfish. These fish have a simple body structure and lack jaws, fins, and paired appendages, differentiating them from more advanced fish. They are considered some of the earliest vertebrates, having existed for hundreds of millions of years, providing insights into the evolution of more complex fish and vertebrates. Their unique characteristics make them a significant focus in studies of vertebrate evolution.


What animal group is fish?

fish is a type of animal. Same with birds.


What is the superlative form of the word primitive?

most primitive