Jawless fish - the earliest known vertebrate was the Myllokunmingia.
A vertebrate is any animal with a spinal cord that is protected within a series of tube-shaped bones called vertebrae, in other words, any animal with a backbone. Although snakes appear to be boneless because they have no limbs and are very flexible, they do have a backbone, like all reptiles. This means that the King Cobra is a vertebrate.
A vertebrate is any animal with a backbone; those without a backbone are called invertebrates. Both vertebrates and invertebrates are members of the Animal Kingdom.
The Three-toed Sloth has 9 Cervical vertebrae, while the Two-toed Sloth and Manatee have 6. Dugongs, cousins of the manatee appear to still have 7 vertebrae.
Magic
horses foxes and all other mammals have backbones. Also, birds and fish also have backbones.
No they are still vertebrates. And just to intrigue you further, though tadpoles might not appear to have a vertebrae, they too have one.
not sure!
you appear to be a goon.
Dinosaurs
It actually does appear in Animal Crossing City Flok but Wisp does not appear in Animal Crossing Wild World(DS) He's talking about Game cube. No he does not only appear on Halloween. He appears sometimes on night. And SOMETIMES ok not every night. anyway good Luck!
The two possibilities are carpet and preact; neither appear to be an animal.
Yes, "disappear" is a compound word composed of the prefix "dis-" and the root word "appear."