Biology - Characteristics of Kingdom Animalia
Characteristics of Kingdom Animalia
Phylum Chordata is divided into a number of classes. The main six classes
are: (mammals), Aves (birds), Reptilia (reptiles), (amphibians),
(cartilaginous fish) and (bony fish).
The remaining animal phyla are invertebrates.  The phyla are:
(sponges), (arthropods), (molluscs), (cnidarians), (flatworms),
(annelids/segmented  worms), (nematodes/roundworms) and (echinoderms).