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Agnathans are the jawless fish. They are usually fairly small (a few centimeters in length.) They consist of lancelets and tunicates. They have a notochord which is like a backbone, but it is more flexible than bone. Tunicates are enveloped by a tough tunic around their bodies. Other than that, they have no other bones.
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How is the skeleton of a shark to the skeleton of a jawless fish?
Sharks and jawless fish have cartilaginous skeletons, meaning their skeletons are comprised of cartilage.
Which type-of-skeleton does a jawless-fish have?
Jawless fish have cartilaginous skeletons, meaning their skeletons are made up of cartilage.
Are bony fish extinct?
No bony fish are not extinct. Bony fish are fish with a bone skeleton unlike Cartilaginous fish which heave a cartilage skeleton and jawless fish which don't have a skeleton. -Erin 11
What kind of fish are most ancient?
Jawless Entelognathus primordialis is the most ancient fish.
What do jawless fish look like?
Jawless fish have slim, eel-like bodies without scales. They have median fins but no paired appendages. They have no jaws, so they generally resemble tubes. Hagfish and lampreys are examples of jawless fish.
What is the skeleton of a jaw less fish made of?
The skeleton of jawless fish, such as lampreys and hagfish, is primarily made of cartilage rather than bone. Cartilage is a flexible and lightweight tissue that provides structure and support to these fish without the need for heavy bones.
What is the difference bony fish and cartilaginous and jawless fish?
Ray-finned fish have "true" bone skeletons, where as the cartlaginous fish have...cartilage instead of bone as their skeletons.
How is the skeleton of a shark similar to the skeleton of a jawless fish?
they both have lateral line for sensing.lateral line system- sense organ that enables the fish to detect movement and vibration in the surounding water.;>carmae
What are the charaictics of a jawless fish?
Jawless fish have a cartilaginous skeleton and a sleek, eel-like body with naked skin. They do not have paired appendages or jaws. They have a dorsal nerve cord that leads to a distinct brain. Median fins are present.
Is a clown fish a jawless fish?
Clown fish do have jaws, so they are not a jawless fish.
What is the main difference between Agnathans and Chondrichthyes?
The main difference between Agnathans (jawless fish) and Chondrichthyes (cartilaginous fish) is the presence of jaws. Agnathans lack jaws, while Chondrichthyes have well-developed jaws. Additionally, Agnathans have a cartilaginous skeleton, while Chondrichthyes have a skeleton made of cartilage.
What kind of fish is a lampery?
The Lamprey is an eel-like shaped, jawless fish of the order Petromyzontiformes.
