Well, vertebrates evolved from non-vertebrates if that's what you mean.
Evolution of the Vertebrates has 576 pages.
Evolution of the Vertebrates was created on 2001-12-15.
The ISBN of Evolution of the Vertebrates is 0-471-38461-5.
Maybe an ammocoete larva.
The same as it was when and after vertebrates. Evolution is the change in allele frequency over time in a population of organisms. Change over time. Happens and happened in single celled organisms and invertebrates long before there were vertebrates.
The major difference between vertebrates and invertebrates is that vertebrates have a back bone and invertebrates don't
vertebrates have a backbone invertebrates don't
The evolution of the watertight egg allowed vertebrates to reproduce on land, breaking their dependence on water for reproduction. This adaptation enabled vertebrates to exploit terrestrial habitats and diversified their evolutionary opportunities.
The development of the notocord.
Alan Feduccia has written: 'Torrey's morphogenesis of the vertebrates' -- subject(s): Vertebrates, Morphogenesis 'Structure and evolution of vertebrates' -- subject(s): Anatomy, Anatomy and histology, Anatomy, Comparative, Comparative Anatomy, Laboratory manuals, Vertebrates 'Riddle of the feathered dragons' -- subject(s): Evolution, Flight, Paleontology, Fossil Birds, Fossil Feathers, Evolutionary paleobiology, Birds
Vertebrates have spines & invertebrates do not have spines.
This suggests that vertebrates have evolved adaptations that allow them to thrive in a variety of environments, from land to water. It also demonstrates the versatility of vertebrates in adapting to different ecological niches over time. Additionally, it highlights the success of vertebrates in diversifying and evolving to occupy different habitats.