Heart .
Vertebrates. The Origin of Tetrapods The first vertebrates on land were amphibians in the Devonian (400 mya) May have arose from the rhipidistian.
2007-2008 Domain Bacteria Domain Archaea Domain Eukarya Common ancestor Kingdom: Animals Domain Eukarya VERTEBRATES!!!
The Cold-Blooded Vertebrates Chapter 13B Body Systems in Vertebrates.
