Subphylum From Simple English Wikipedia, the free encyclopedia A subphylum is a rank in the Linnaean taxonomy of biological groups. Normally the ranks go phylum > class > order etc. However, sometimes extra steps are needed, and if so, a subphylum ranks immediately below a phylum. This short article about biology can be made longer.

Il subphylum (pl.: subphyla) è una categoria tassonomica, utilizzata in biologia per la classificazione scientifica delle forme di vita, rappresentante un taxon gerarchicamente inferiore al phylum e superiore alla classe.

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Vertebrates ( / ˈvɜːrtɪbrəts /) comprise all species of animals within the subphylum Vertebrata ( / vɜːrtɪˈbreɪtə /) ( chordates with backbones ), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described.

The subphylum Hexapoda (from Greek for 'six legs') comprises most species of arthropods and includes the insects as well as three much smaller groups of wingless arthropods: Collembola, Protura, and Diplura (all of these were once considered insects). The Collembola (or springtails) are very abundant in terrestrial environments. Hexapods are named for their most distinctive …

In biology, a phylum (/ ˈ f aɪ l əm /; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class.Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent. Depending on definitions, the animal kingdom Animalia contains …

From Wikipedia, the free encyclopedia Myriapoda (from Ancient Greek μυρίος (muríos) 'ten thousand', and πούς (poús) 'foot') is a subphylum of arthropods containing millipedes, centipedes, and others. The group contains about 13,000 species, all of them terrestrial.

Structure. A shed carapace of a lady crab, part of the hard exoskeleton. Body structure of a typical crustacean – krill. The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, the pereon or thorax, and the pleon or abdomen. The head and thorax may be fused together to form a cephalothorax ...