classification
In taxonomy, the arrangement of organisms into taxonomic groups according to their degree of evolutionary relatedness.
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Ichthyological terms, not general ones.
In taxonomy, the arrangement of organisms into taxonomic groups according to their degree of evolutionary relatedness.
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Taxonomical method used to classify species of organisms into clades, each of which contains an ancestor organism and all its descendants, based on synapomorphies (shared derived characters). Cladistic classifications are usually presented in the form of a cladogram.
Classification of organisms into groups in an ordered system based on natural relationships; the practice of arranging organisms in this fashion; carrying out classification.
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Division of mostly freshwater eukaryotic algae, informally referred to as chlorophytes and containing the true green algae and stoneworts under modern systems of classification. Like higher plants members possess chlorophylls a and b and store food as starch.
Correspondence in physical structure, thought or classification.
Collective term for certain members of the protozoan Phylum Ciliophora, of which it is considered a subclass in certain classification systems. Members naturally inhabit infusions of decomposing organic material and some are cultured by aquarists in order to feed very small fish fry. The name was formerly applied to a much larger group of aquatic microorganisms which also included some other protist groups and unicellular algae.
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Taxonomic rank in the hierarchical classification of living organisms and natural objects. Either the highest rank or rank below domain, depending on the system being followed.
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Branch of taxonomy concerned with the application of scientific names to taxa, based on a particular classification scheme and in accordance with agreed international rules and conventions.
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In morphology, a paired lateral bone above the mouth lying between the vomer and maxillary; the presence or absence of teeth on the palatine is a defining character in the classification of some fishes. Also known as autopalatine.
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Branch of biology concerned with classification and nomenclature of organisms, and the relationships between them; taxonomy.
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Scientific study of animals, including their classification, structure, physiology, and history; the fauna native to a given area and its composition; the biological characteristics of a particular animal or group of animals.
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