German scientists are studying the "cactus works", a body discovered in south-western China. It might help to better understand the origin of the group of arthropods.
Arthropods are organisms characterized by an external skeleton (mostly composed of chitin, as in ants, for example) and have legs. They include more than one and a half million different species among which are the trilobites, crustaceans, arachnids and insects of all kinds.
Researchers at the University of Berlin are part of the discovery of "cactus works "in the journal Nature. This could be the closest known relative of the arthropod current indicates Sciences et Avenir. Measuring six inches, this creature resembles a species of worm, but who has ten pairs of jointed legs and spiny .
lobopodia This worm (with appendages) in any case has evolved enough to have jointed limbs ultimate achievement. For researchers, this tends to prove that this organization has evolved gradually hardening its forelegs appears that its external skeleton. The study should continue to determine if all other arthropods followed the same path.
http://www.maxisciences.com/cactus-qui-marche/arthropodes-decouverte-du-cactus-qui-marche-creature-inhabituelle_art12767.html
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