#phylum

• Amerind — A term used in macro-linguistics and structural anthropology to designate the hypothetical phylum of indigenous languages spoken by native populations of the American continent (excluding Eskimo-Aleut languages); as an adjective, it describes a cultural element, native community, or idiom belonging to this original Amerindian group.
• Annelid — The feminine singular form of 'anelid' or a designation used for any invertebrate belonging to the phylum Annelida. In its plural form (anelide), it represents the broad taxonomic group gathering segmented worms (oligochaetes, polychaetes, and hirudineans).
• Annelids — A major phylum of bilaterally symmetrical invertebrate animals (Annelida), comprising segmented worms such as earthworms, leeches, and marine polychaetes. Structurally, their body is characterized by homonomous metamerism, being divided externally and internally (by transverse septa) into a series of repeating ring-like segments, possessing a closed circulatory system and a ventral ganglionic nerve cord.
• Arthropods — The scientific and taxonomic designation assigned to the largest phylum of invertebrate animals (Arthropoda), consisting of species with a segmented body, bilateral symmetry, and jointed appendages. Members of this group, which inhabit absolutely all living environments on the planet, periodically undergo the molting process to allow body growth restricted by the external crust.
• Asterozoans — A major subphylum or taxonomic grouping (Asterozoa) within the phylum Echinodermata, bringing together all echinoderms with a star-shaped body and unchanging radial symmetry; it includes two major extant classes: Asteroidea (true starfish) and Ophiuroidea (brittle stars or ophiuroids).