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taxa
Book article from: The Columbia Encyclopedia, Sixth Edition
taxa see taxon .
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taxon
Book article from: The Columbia Encyclopedia, Sixth Edition
taxon (pl. taxa), in biology, a term used to denote any group or rank in the classification of organisms, e.g., class, order, family.
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biostratigraphy
Book article from: The Oxford Companion to the Earth
...biostratigraphical purposes. A taxon (plural taxa ) refers to any biological...bias. A constituent taxon may be distributed...more of the principal taxa of which it is composed...their constituent taxa can provide important...range of a specified taxon. An acme-zone is...
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classification
Book article from: The Columbia Encyclopedia, Sixth Edition
...include the fungi, plants, and animals. The Lower Taxa Kingdoms are divided into a hierarchical system of categories called taxa (sing. taxon). The taxa are, from most to least inclusive: phylum (usually...
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Systematics
Encyclopedia entry from: The Gale Encyclopedia of Science
...Nomenclature is the assignment of accurate names to taxa. Taxonomy refers to the scientific method...relationships. A single group is called a taxon; multiple groups are called taxa; the study of taxa is called taxonomy. Phylogeny is the study...
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major fossil groups: their origins
Book article from: The Oxford Companion to the Earth
...organisms that have lived, and many important taxa have left no fossil record. The major...related to the development of any later taxa. At the base of the Cambrian, a new fauna...development and diversification of invertebrate taxa. On the basis of this information it has...
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trilobites and related fossils
Book article from: The Oxford Companion to the Earth
...series of thoracic segments, which vary in number in different taxa. Each of these is articulated with its anterior and posterior...other schemes the phylum Arthropoda is retained and the major taxa are given subphylum or class status. The trilobites are divided...
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transfer functions in palaeoclimatology
Book article from: The Oxford Companion to the Earth
...relationship; and (iii) the ecological requirements of the various taxa being studied cannot vary appreciably in the time interval under...assemblages, rather than the distribution record of a single taxon, are preferable since they can better account for the complexity...
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Geophagy
Encyclopedia entry from: Encyclopedia of Food and Culture
...the consumption of earth, is widespread in various animal taxa, including birds, reptiles, and mammals. Among the latter...all of these hypotheses depending on ecological context and taxon and indicates that geophagy is likely to be associated with...
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Tinamous
Encyclopedia entry from: The Gale Encyclopedia of Science
...entire group is believed to be composed of rather closely related taxa, and consequently, the taxonomy of tinamous is not well established...species are named, further study may result in some of these taxa being joined together as subspecies of the same bird, while...
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