Millipede Wallpaper

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Millipedes superclass invertebrates combining four classes terrestrial arthropods. Typical representatives of centipedes California and centipede giant drupe common flycatcher. Currently scientists described more than 12 000 species including 11 kinds of minerals.

The oldest fossil representatives superclass centipedes were found in layers dated to the late Silurian period. Molecular analysis indicates that as an independent taken shape treasure this superclass is already in the Cambrian period which is partly supported fossils resembling.

Traditionally, centipedes regarded as the next of kin of insects with which they are combined in a taxon Uniramia or Atelocerata. Currently there are several hypotheses about the systematic position of centipedes.

Some believe that centipedes although they belong to the Mandibulata with crustaceans and insects can not be considered as the next of kin of the latter. Some authors even removed from the centipedes Mandibulata and bring them closer to helitserovye. Most researchers are still of the opinion that a sister or a paraphyletic group with respect to the insect.

In the first case it is recognized monophyly themselves. As synapomorphies indicated specific manner arranged dissected second upper jaw or mandible the structure of which is different from the monolithic odnochlenikovyh mandible insects and crustaceans and this tendency to diplosegmentatsii. However there are some indications that there may be diplosegmenty and insects.

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