limbless.
The most complex and intelligent vertebrate is Homo sapien, otherwise known as a human being.
the mammalia
Molecular fingerprinting is comparing proteins between different species. The same proteins found in two different species most likely means that they originated from a common ancestor. For example, the proteins of light-sensitive cells in an ancient marine worm's brain closely resemble proteins of cells in the vertebrate eye. This resemblance shows common ancestry between worms and vertebrates and that cells of the vertebrate eye originated from brain cells.
CO2 makes up most of the exhaled air in vertebrates.
a Devon Clements
Limbless salamanders lost their legs because of their burrowing or swimming way of life. As did limbless lizards and snakes.
Technically, vegetables.
all vertebrate have a spinal cord.
No, leeches are limbless.
Backpack
Because they have fins and not legs. And they breathe water and not air.
Amphibian, common name for any animal of the vertebrate class lying between fishes and reptiles. The class, with about 4,400 existing species, includes three living orders: the tailed amphibians, consisting of the salamanders (including newts) and sirens; the tailless amphibians, which include frogs and toads; and the caecilians, which are worm-like amphibians that are limbless and blind.
The caecilians are limbless amphibians.
small wormlike limbless amphibians
Feathers
The Girrafe 7