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Mammalia is a class of animal within the phylum Chordata. Mammal classification has been through several iterations since Carl Linnaeus initially defined the class. No classification system is universally accepted; McKenna & Bell (1997) and Wilson & Reader (2005) provide useful recent compendiums.[1] Many earlier ideas from Linnaeus et al. have been completely abandoned by modern taxonomists, among these are the idea that bats are related to birds or that humans represent a group outside of other living things.[2] Competing ideas about the relationships of mammal orders do persist and are currently in development. Most significantly in recent years, cladistic thinking has led to an effort to ensure that all taxonomic designations represent monophyletic groups. The field has also seen a recent surge in interest and modification due to the results of molecular phylogenetics.
George Gaylord Simpson's classic "Principles of Classification and a Classification of Mammals" (Simpson, 1945) taxonomy text laid out a systematics of mammal origins and relationships that was universally taught until the end of the 20th century.
Since Simpson's 1945 classification, the paleontological record has been recalibrated, and the intervening years have seen much debate and progress concerning the theoretical underpinnings of systematization itself, partly through the new concept of cladistics. Though field work gradually made Simpson's classification outdated, it remained the closest thing to an official classification of mammals. See List of placental mammals and List of monotremes and marsupials for more detailed information on mammal genera and species.
^Vaughan, Terry A.; Ryan, James M.; Czaplewski, Nicholas J. (2015). "Chapter 4: Classification of Mammals" (PDF). Mammalogy (Sixth ed.). Jones & Bartlett Learning. ISBN 9781284032093.
^Marks, Jonathan M. (1995). Human Biodiversity: Genes, Race, and History. Transaction Publishers. ISBN 9780202366562.
and 29 Related for: Mammal classification information
phylum Chordata. Mammalclassification has been through several iterations since Carl Linnaeus initially defined the class. No classification system is universally...
(pouched mammals) and placental mammals. See List of monotremes and marsupials, and for the clades and families, see Mammalclassification. Classification updated...
stem mammals have given rise to the more erect therapsids, who in their turn have given rise to the mammals. In traditional vertebrate classification, the...
outdated Simpson's classification, it remains the closest thing to an official classification of mammals, despite its known issues. Most mammals, including the...
Pangolins, sometimes known as scaly anteaters, are mammals of the order Pholidota (/fɒlɪˈdoʊtə/). The one extant family, the Manidae, has three genera:...
872 species Recently extinct mammals are defined by the International Union for Conservation of Nature (IUCN) as any mammals that have become extinct since...
Carnivora /kɑːrˈnɪvərə/ is an order of placental mammals that have specialized in primarily eating flesh, whose members are formally referred to as carnivorans...
Lists of mammals by region cover mammals found in different parts of the world. They are organized by continent, region, and country, and in some places...
and placental mammals (eutherians, for which see List of placental mammals). Classification updated from Wilson and Reeder's "Mammal Species of the World:...
This is a collection of lists of mammal species by the estimated global population, divided by orders. Lists only exist for some orders; for example, the...
Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and...
161 families, 27 orders, and around 5,937 recognized living species of mammal. Mammalian taxonomy is in constant flux as many new species are described...
Therian mammals began to diversify 10-20 million years before the dinosaur extinction. The rank of "Theria" may vary depending on the classification system...
Venomous mammals are animals of the class Mammalia that produce venom, which they use to kill or disable prey, to defend themselves from predators or...
cetaceans Archaeoceti List of whale vocalizations List of marine mammal species Mammalclassification The Society for Marine Mammalogy considers Eden's whale a...
nuclear DNA and protein characters, as well as the fossil record. Mammalclassification Placentalia Exceptional clades whose males lack the usual boreoeutherian...
categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which...
Fereungulata. Mammalclassification Scrotifera Simpson, George Gaylord (1945). "The principles of classification and a classification of mammals". Bulletin...
differences to the relative ages of different mammal groups estimated with genomic data. Cladogram and classification based on Amrine-Madsen, H. et al. (2003)...
Marine Mammals of the World. A & C Black, London List of chordate orders Lists of mammals by region List of prehistoric mammalsMammalclassification List...
Phylogenetic position of Smutsia temminckii within family Manidae Mammalclassification Smutsia Wikimedia Commons has media related to Smutsia temminckii...
There are 27 mammal species native to Ireland or naturalised in both the Republic of Ireland and Northern Ireland before 1500. The Red List of Irish terrestrial...
List of mammals of China List of chordate orders Mammalclassification Lists of mammals by region List of prehistoric mammals List of mammals described...
placental mammals in the order Chiroptera. There are an estimated 1,300 species of bat. Genera and species of flying fox as according to Mammal Species...
semiaquatic mammals are a diverse group of mammals that dwell partly or entirely in bodies of water. They include the various marine mammals who dwell in...
exception of the mammals are now extinct, but each of these groups possessed different tooth patterns, which aids with the classification of fossils. Most...
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