Animal Taxonomy

There is only one Phylum of animals with backbones, it is called Chordata, they are just 5% of the animal population of the world.​

​Vertebrates

There are more than 30 Phyla of animals without backbones, they compose around 95% of the animals in the world.

​Invertebrates

​The two main kinds of animals

​Arthropoda is the largest phylum in the taxonomic system and is composed of insects, crustaceans, and arachnids. Nearly 4/5 of all living animals are arthropods.

​Porifera (sponges)

​Cnidaria (jellyfish, corals)

​Platyhelminthes (flatworms, tapeworms, flukes)

​Nematoda (roundworms)

Mollusca (snails, clams, squids)​

Annelida (earthworms, leeches, marine worms)​

​Arthropoda (insects, spiders, crustaceans, centipedes)

​Echinodermata (sea stars, sea urchins, sand dollars, sea cucumbers)

​The arthropoda phylum compounds over 80% of the species of animals.

​Invertebrates Phyla