How Many Families Of Animals Are There

Taxonomic rank betwixt genus and order

Family (Latin: familia, plural familiae ) is one of the 8 major hierarchical taxonomic ranks in Linnaean taxonomy; it is classified between order and genus. A family unit may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; even so, popular names are often used: for case, walnut trees and hickory trees belong to the family Juglandaceae, but that family is unremarkably referred to as beingness the "walnut family".

What belongs to a family unit—or if a described family unit should exist recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, only in plants, they can be characterized on the basis of both vegetative and reproductive feature of plant species. Taxonomists often take dissimilar positions about descriptions, and there may be no broad consensus beyond the scientific community for some time. The publishing of new data and opinions often enables adjustments and consensus.

Nomenclature [edit]

The naming of families is codified by various international bodies using the following suffixes:

• In fungal, algal, and botanical nomenclature, the family unit names of plants, fungi, and algae end with the suffix "-aceae", with the exception of a small number of historic but widely used names including Compositae and Gramineae.^{[1] [2]}
• In zoological classification, the family names of animals cease with the suffix "-idae".^[3]

History [edit]

The taxonomic term familia was first used by French botanist Pierre Magnol in his Prodromus historiae generalis plantarum, in quo familiae plantarum per tabulas disponuntur (1689) where he called the 70-six groups of plants he recognised in his tables families ( familiae ). The concept of rank at that time was not yet settled, and in the preface to the Prodromus Magnol spoke of uniting his families into larger genera , which is far from how the term is used today.

Carl Linnaeus used the word familia in his Philosophia botanica (1751) to denote major groups of plants: copse, herbs, ferns, palms, and and so on. He used this term only in the morphological department of the book, discussing the vegetative and generative organs of plants.

Afterwards, in French botanical publications, from Michel Adanson's Familles naturelles des plantes (1763) and until the end of the 19th century, the word famille was used as a French equivalent of the Latin ordo (or ordo naturalis ).

In zoology, the family as a rank intermediate betwixt order and genus was introduced past Pierre André Latreille in his Précis des caractères génériques des insectes, disposés dans un ordre naturel (1796). He used families (some of them were not named) in some simply not in all his orders of "insects" (which then included all arthropods).

In nineteenth-century works such every bit the Prodromus of Augustin Pyramus de Candolle and the Genera Plantarum of George Bentham and Joseph Dalton Hooker this word ordo was used for what now is given the rank of family.

Uses [edit]

Families can be used for evolutionary, palaeontological and genetic studies considering they are more stable than lower taxonomic levels such every bit genera and species.^{[4] [5]}

Come across also [edit]

• Systematics, the study of the diverseness of living organisms
• Cladistics, the nomenclature of organisms by their order of branching in an evolutionary tree
• Phylogenetics, the study of evolutionary relatedness among various groups of organisms
• Taxonomy
• Virus classification
• Listing of Anuran families
• List of Testudines families
• List of fish families
• Listing of families of spiders

References [edit]

1. ^ Barnhart 1895.
2. ^ ICN 2012, Section ii. Names of families and subfamilies, tribes and subtribes Commodity 18.
3. ^ International Commission on Zoological Nomenclature (1999). "Article 29.2. Suffixes for family-group names". International Code of Zoological Classification (Fourth ed.). International Trust for Zoological Nomenclature, XXIX. p. 306. Archived from the original on 9 November 2004. [1]
4. ^ Sarda Sahney, Michael J. Benton & Paul A. Ferry (2010). "Links between global taxonomic diversity, ecological diversity and the expansion of vertebrates on land". Biology Letters. 6 (iv): 544–547. doi:x.1098/rsbl.2009.1024. PMC2936204. PMID 20106856.
5. ^ Sarda Sahney & Michael J. Benton (2008). "Recovery from the most profound mass extinction of all time". Proceedings of the Royal Society B: Biological Sciences. 275 (1636): 759–765. doi:10.1098/rspb.2007.1370. PMC2596898. PMID 18198148.

Bibliography [edit]

• Barnhart, John Hendley (15 January 1895). "Family unit Nomenclature". Bulletin of the Torrey Botanical Society. 22 (1): i–25. doi:10.2307/2485402. JSTOR 2485402.
• Bullock, A. A. (January 1958). "Indicis Nominum Familiarum Angiospermarum Prodromus". Taxon. seven (i): 1–35. doi:10.2307/1216226. JSTOR 1216226.
• Bullock, A. A. (August 1958). "Indicis Nominum Familiarum Angiospermarum Prodromus: Additamenta et Corrigenda I". Taxon. 7 (half-dozen): 158–163. doi:10.2307/1217503. JSTOR 1217503.
• ICN (2012). "International Code of Nomenclature for algae, fungi, and plants". Bratislava: International Association for Plant Taxonomy. Retrieved 17 January 2016.

Source: https://en.wikipedia.org/wiki/Family_(biology)

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