How many animals are there?

There are 38 animal phyla in the most commonly used classification scheme. Some systematics claim that there is a different number of phyla, although always between 35 and 40. In the last century, only three phyles were discovered, the latest in 1993. No known Phyla has ever disappeared: at least some of their representations have always survived the main extinction. A million years ago. There is constantly disagreement about how many of these phyla existed before the explosion of the Cambrian explosion, during the editions of Ediacaranas, although most scientists agree that at least eight have already been established. Echinodermata and Chordata. From an informal point of view, they are molluscs (112,000 species), mushrooms (5,000 species), Cnidarians (jellyfish and friends: 11,000), flat worms (25,000), Nematodes (80,000 - 1 million), Annelids (segmented worms: 15,300), arthropods (1,134,000+), Echinoderma (7,000) Clupods and Clupods (spelling (1.134 000+. 100 000+).

Each phylum is monophyletic, which means that it includes all descendants of a single kind and no species that is not a descendant of this so -called taxon stem. This can be confirmed using genetic analysis. Among the phyla are various groups of insects (more than a million species, probably much more) and mites (Arachnid with 45,000 species described, but can be up to 1 million), both arthropods.

All remaining phyles have fewer than about 2,000 members, the most precious phyles with only three (Cycliophora: odd bags represented by Symbion Pandora ), two (xenoburbelida: Strange Flatworm) or one type (Microgathozoa amoeba). Most of them are simple marine organisms, often referred to as worms or nanoplankton. The most interesting are Rotify (Rotifera, Small Line Organisms), Tardigrady (Tardigrada, Water Bears, the most difficult of all animals), dicymides (rhombozoa, trumpets, octopuses that are in very small MOci), Basiolpha, very latter to modules, Basilomorph, Basilomorph, Basilomorph, Basilomorph, Basilomorph, Basilomorph, Basilomorph, Bastolf, Bastolf, Bastolf, Basbolpha, Basbotrich, Basbotrich, Basbotrich Basbotrichs, Basbotrich, Basbotrich) all bilaterians) and moss animals (Bryozoans, superficially similar to coral).