He doesn't even have a head. If Blob had been born with a spine, or backbone, he would have been a vertebrate. If we give Blob some legs and a head then he can start to move about. There are lots ...

Among them were the chordates, to which vertebrates (animals with backbones) such as humans ... the fossils showed that our vertebrate ancestors entered the evolutionary story some 50 million ...

More than 95% of Australian animals are invertebrates (animals without backbones—spiders ... in Australia have been heavily skewed towards vertebrates, especially mammals and birds.