No refuge could save the hireling and slave. From the terror of flight or the gloom of the grave: And the star-spangled banner in triumph doth wave. O'er the land of the free and the home of the brave. O thus be it ever when free-men shall stand. Between their lov'd home and the war's desolation; Blest with vict'ry and peace, may the heav'n-rescued land.
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, the most complex and complicated. They have interior skeletons and have bilateral symmetry. They have more advanced brains.
Phylum Chordata [edit]. Name means the chordates, i.e., these animals have a notochord at some stage in their lifecycle. This phylum consists of tunicates, lancelets, and the vertebrates. There are four major features that characterize the phylum Chordata.