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fish
The vertebrates have a nebulous starting point. There are some chordates that have more of a notochord than a true vertebrate column. Some taxicologists are more comfortable saying that a Coelacanth has a notochord rather than a vertebrate column when clearly the vertebrate are present in this animal.
So its is a matter of your own definition. One could say 'at a stretch' that the hagfish and lamprey are the most ancient vertebrates.
Elza Olson
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∙ 14y agoFish were the first vertebrates to evolve. They were jaw less and were covered in bony plates. Discovered about 510 million years ago.
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∙ 12y agoThe Agnatha, or jawless fishes, are the oldest known vertebrates. The only surviving members of this class are the hagfish and lampreys , known as cyclostomes.
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∙ 15y agoa fishes
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∙ 12y agoFish
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∙ 13y agoreptiles
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∙ 14y agoFish
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∙ 10y agofishes
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its fish
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Why are the fossils of vertebrates similar to the bones of living vertebrates?
probably cause current vertebrates have a backbone and ancient vertebrates ahd them to
Are most animals on earth vertebrates or inveretebrate' s?
vertebrates
What is an Owl Gruop?
MOB
Endoskeletons of most vertebrates are composed of?
What materials make up the endoskeletons of most vertebrates
Are trouts vertebrates?
Yes, most fish species have backbones, therefore are vertebrates.
Are rats invertebrates or vertebrates?
since rats are mammals, they are most definitely vertebrates.
What is the most ancient group of vertebrate's?
fish The vertebrates have a nebulous starting point. There are some chordates that have more of a notochord than a true vertebrate column. Some taxicologists are more comfortable saying that a Coelacanth has a notochord rather than a vertebrate column when clearly the vertebrate are present in this animal. So its is a matter of your own definition. One could say 'at a stretch' that the hagfish and lamprey are the most ancient vertebrates.
What is a gruop of puppies called?
A litter
A gruop of insects is called?
a swarm
What is a gruop of unicorns called?
A blessing.
Name 5 organs found in most vertebrates?
Five organs that are found in most vertebrates are the brain, stomach, heart, eyes and skin. Vertebrates are animals that have a spine.
Is a loggerhead sea turtle a vertebrate?
Sea turtles are among the world's most ancient vertebrates. ... Sea turtles are reptiles, like snakes and lizards, and breathe air.
