arthropods
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Arthropod
An arthropod is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and jointed appendages. Arthropods are members of the phylum Arthropoda (from Greek  , "joint", and "leg", which together mean "jointed leg"), and include the insectsarachnidscrustaceans, and others. Arthropods are characterized by their jointed limbs and cuticles, which are mainly made of a-chitin; the cuticles of crustaceans are also biomineralized with calcium carbonate. The rigid cuticle inhibits growth, so arthropods replace it periodically by molting. The arthropod body plan consists of repeated segments, each with a pair of appendages. It is so versatile that they have been compared to Swiss Army knives, and it has enabled them to become the most species-rich members of all ecological guilds in most environments. They have over a million described species, making up more than 80% of all described living animal species, and are one of only two animal groups that are very successful in dry environments – the other being the amniotes. They range in size from microscopic plankton up to forms a few meters long.

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Gliederfüßer
Die Gliederfüßer (Arthropoden, Arthropoda, Euarthropoda) sind ein Stamm des Tierreichs. Zu ihnen gehören so unterschiedliche Tiere wie InsektenTausendfüßerKrebstiere (z. B. KrebseEntenmuscheln), Spinnentiere (z. B. SpinnenSkorpioneMilben) und die ausgestorbenen Trilobiten.

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Arthropode
Les arthropodes (Arthropoda) — ou euarthropodes du grec arthron « articulation » et podos « pied », aussi appelés « articulés » — forment un embranchement d'animaux invertébrés. Le corps des arthropodes est formé de segments (ou métamères) articulés, recouverts d'une cuticule rigide, qui constitue leur squelette externe, dans la plupart des cas constitué de chitine.

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Leddjur
Leddjur (Arthropoda) är en stam inom djurriket som omfattar så varierande djurgrupper som insekterspindeldjurmångfotingar och kräftdjur. Leddjuren är jordens artrikaste stam, omkring 80 procent av alla beskrivna djurarter beräknas vara leddjur. Sammantaget finns över en miljon kända arter av leddjur, av vilka de flesta är insekter.

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Stawonogi
Stawonogi (Arthropoda, z gr. arthron - staw + pous - noga) – najliczniejszy w gatunki typ zwierząt na Ziemi. Ich przodkami były wieloszczety typ: pierścienice.Dotychczas opisano ponad milion gatunków.Według danych IUCN opisano 950 000 gatunków owadów i 40 000 skorupiaków Liczby w pozostałych grupach stawonogów wahają się - w zależności od źródła - od kilkunastu tysięcy (np. wije) do ponad 60 tysięcy gatunków pajęczaki,a z każdym rokiem przybywa ich coraz więcej.

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