Question

WHO ARE FIRST VERETEBRATES ON EARTH

Answer 1

Answer:

The earliest vertebrates were jawless fish, similar to living hagfish. They lived between 500 and 600 million years ago. They had a cranium but no vertebral column.

Answer 2

Answer:

Vertebrate Evolution. The earliest vertebrates were jawless fish, similar to living hagfish. They lived between 500 and 600 million years ago. They had a cranium but no vertebral column.