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Although the phylogenetic classification of non-vertebrate animals (both extinct and extant) remains a work-in-progress, the following taxonomy attempts to be useful by combining both traditional (old) ''and'' new (21st-century) paleozoological terminology. The paleobiologic systematics which follows is ''not'' intended to be all-inclusive or completely comprehensive. For practical reasons and relevancy, the below classification and annotations ''emphasize invertebrates'' that (a) are popularly collected as fossils and/or (b) no longer continue alive on this planet. Therefore, as a result, some phyla, classes, and orders of invertebrates are not listed.〔For superb anatomical illustrations and much-more comprehensive information, see ''Volume E'' (''Archaeocyatha'' / ''Porifera'') through ''Volume V'' (''Graptolithina''), published 1953 to 2006 (and continuing), of ''the Treatise on Invertebrate Paleontology'', long-edited by Raymond C. Moore and Roger L. Kaesler (Boulder, Colorado: Geological Society of America; and Lawrence, Kansas: University of Kansas Press). But be warned that some terms therein employed – such as supersubphylum – can be unnecessarily wordy or abstruse. Incidentally, ''revised'' volumes have been recently published regarding the sponges/archaeocyatha (2004, ISBN 0-8137-3131-3) and the brachiopods (2006, ISBN 0-8137-3135-6).〕 If a non-vertebrate animal is mentioned below using its common, or vernacular name, the creature is usually a living, present-day invertebrate. But if a non-vertebrate is cited below by its scientific, taxonomic ''genus'' (in ''italics''), then it is typically an extinct invertebrate, known only from the fossil record.〔The names of genera, orders, classes and phyla have been culled from dozens of sources, both current and decades-old. See the International Code of Zoological Nomenclature (ICZN), as well as ''Volume 1'' and ''Volume 2'' of ''Grzimek's Animal Life Encyclopedia'' (Farmington Hills, Michigan: Gale Group), edited by zoologists Michael Hutchin, Dennis A. Thorney and Sean F. Craig (2003).〕 Invertebrate clades that are (a) ''very important'' as fossils (for example, ostracods frequently used as index fossils), and/or (b) ''very abundant'' as fossils (for example, crinoids easily found in crinoidal limestone),〔For correspondingly ancient ecosystems, see the ''Treatise on Ecology and Paleoecology'', ''Volume 2: Paleoecology'', edited for years by Harry S. Ladd (1957 / 1971), and published by both the Geological Society of America (Boulder, Colorado) and the Waverly Press (Washington, D.C.).〕 are highlighted with a bracketed exclamation mark (! ). Invertebrate groups that (a) are now substantially extinct, and/or (b) contain a ''large proportion'' of extinct species, are followed by a dashed notation (– such as this ). But invertebrate clades which are now completely extinct are designated with a bracketed dagger († ): ==Domain of Eukaryota / Eukarya== (eukaryotes / eukaryans / all cellular organisms bearing a central, organized nucleus with DNA) *comprises ''most'' of the species of life which have been documented by biologists and paleontologists as either living or deceased *includes a wide variety of single-celled protists, all algae, most plankton, most molds, the green plants, and ''all'' animal-related kingdoms * *but does ''not'' include the primal, sub-nuclear, prokaryotic domains of Archaea and Bacteria – nor the enigmatic domain of Viruses 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Taxonomy of commonly fossilised invertebrates」の詳細全文を読む スポンサード リンク
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