Question

first typhical.. chordate....is

Answer 1

The oldest known chordate fossil was found in China and described in 1995. It is a member of the species Yunnanozoon lividium within the subphylum Cephalochordata.

Answer 2

Chordates are animals with backbones. Animal groups in the chordate phylum include fish,amphibians, reptiles, birds and mammals. Animals with backbones are the most highly evolved groups of animals. First chordates were class pisces. That is fishes, than life moved on to land, with amphibians coming into existing, i.e.,frogs.. Then, reptiles evolved. Eg- snakes. Then, birds evolved and then mammals.
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