0
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.
Fish were the first vertebrates to evolve. They were jaw less and were covered in bony plates. Discovered about 510 million years ago.
The Agnatha, or jawless fishes, are the oldest known vertebrates. The only surviving members of this class are the hagfish and lampreys , known as cyclostomes.
Add your answer:
Earn +20 pts
Why are the fossils of vertebrates similar to the bones of living vertebrates?
Fossils of vertebrates are similar to the bones of living vertebrates because they were once part of living organisms that shared similar anatomical structures and functions. Over time, the bones of vertebrates have undergone evolutionary changes, but many core features have been conserved due to their essential functions. This similarity allows paleontologists to make informed comparisons and infer the evolutionary relationships between ancient and modern vertebrates.
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
A gruop of insects is called?
a swarm
What is a gruop of unicorns called?
A blessing.
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.
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.
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.
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.
Are flying lemurs vertebrates or invertebrates?
They are Vertebrates, most of them have a spine which puts them in the vertebrate category!
