[Conflectualism]*˚ - The biologist E.O. Wilson estimates there are about 13 million species, broken down as follows:

Insects 9 million

Bacteria 1 million

Fungi 1 million

Viruses 0.3 million

Algae 0.3 million

Worms 0.3 million

Plants 0.2 million

Protozoa 0.2 million

Echinoderms 0.2 million

Mollusks 0.2 million

Crustaceans 0.2 million

Fish 30 thousand

Reptiles 10 thousand

Birds 10 thousand

Amphibians 5 thousand

Mammals 5 thousand