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Why do hagfishes represent a group of craniates that is considered to be only related to the vertebrates and not a true vertebrate?
Wiki User
∙ 11y ago
because they lack skeletal elements that surround the nerve cord to form a vertebral column
Wiki User
∙ 11y ago
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What is the animal which are chordates and craniates but not vertabrate?
Myxini (hagfishes) are chordates and craniates. they have a cartillagenous skull but no vertebra or jaws.
Does a cyclostome have a backbone?
Cyclostomes are a group of chordates that include the lampreys and the hagfishes. They do not have a true backbone, but instead have blocks of cartiledge, called arcualia, around the spinal cord (similar to what you would find in vertebrate embryos). Taxonimcally, cyclostomes are included in the phylum chordata, subphylum vertebrata. They are considered primitive vertebrates, even though they do not have true vertebrae.
Do pigeons have a lobed liver?
Yes pigeons have spleens. All vertebrates have spleens except lampreys and hagfishes.
What vertebrates don't have jaws?
Lampreys and hagfishes are the only jawless vertebrates to survive today. They both have a round mouth and for this reason are often referred to as cyclostomes.
How are lampreys different from hagfishes?
Lampreys differ from hagfishes by having a notochord that is surrounded by a tube of cartilage.
How do hagfishes reproduce?
by pooing
The skeletons of lampreys and hagfishes are made of?
cartilage
Lampreys and hagfishes are the only remaining?
agnathans
Are Lampreys and hagfishes are examples of what kind of fishes members of the class Agnatha?
jawless fishes
How do sharks and hagfishes obtain food?
Hagfishes crawl into the bodies of dead or dying fishes and use their rough tongues to scrape decaying tissues.Sharks will attack and eat anything that smells like food. They can smell and taste even a tiny amount of blood.
What is the hagfishs favorite food?
Hagfishes are scavengers, not predators, because they lack jaws. They do possess teeth which enable them to process carcasses, piece by piece.
What are hagfishes?
Enemies of the hagfish include seals, dolphins, sea lions, and octopus. Another one of the hagfishâ??s main enemies are human beings.
