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Mamíferu

Mamíferu
 (Mamíferu)
Mamíferu
Otrus nombris: (({algotrasdenominacionis))}
Destribución
[[File:(({Mapa))}|250px|Destribución de Mamíferu]]
Crassificación científica
Reinu
Animalia
Filu
Chordata
Crassi
Mammalia
Ordin
(({Ordin))}
Familia
(({Família))}
Géneru
(({Géniru))}
Especii
(({Espécii))}
Autol
(({Autol))}
Estau de conservación
[[File:Status_iucn2.3_(({Estau))}_es.svg|200px|Conservación deMamíferu]]

Los mamíferus (Mammalia) son una crassi de vertebráus amniotas homeotermus (de «sangri calienti») que posein glándulas mamarias productoras de lechi con las qu'alimentan a las crías. La mayoría son vivíparus (con la notabli excepción de los monotremas: ornitorrincu y equidnas).

Se trata d'un taxón monofiléticu; es izil, tós desciendin d'un antepasau común que se remonta probablementi a finalis del Triásicu, hazi más de 200 millonis d'añus. Pertenecin al clau sinápsidus, qu'incluyi tamién numerosus «reptilis» emparentaus con los mamíferus, como los pelicosaurius y los cinodontus.

Se conocen unas 5 486 especis actualis,[1] de las cualis 5 son monotremas,[2] 272 son marsupialis[3] y el restu, 5 209, son placentarius. La céncia qu'estudia los mamíferus se denomina teriología, mastozoología o mamiferología.

Guípesi tamién

[Edital | Editá'l códigu]
  • Taxonomía los mamíferus
  • Teriología
  • Mamíferu acuáticu
  • Mamíferu marinu

Referéncias

[Edital | Editá'l códigu]
  1. Chapman, Arthur D. "Numbers of Living Species in Australia and the World". http://www.environment.gov.au/biodiversity/abrs/publications/other/species-numbers/2009/04-01-groups-chordates.html#mammalia (2009). ISBN 9780642568618; páginas: 80. Mammals are a quite well known group, however estimates for the numbers of described species still vary considerably, ranging from 4300 in Biodiversity: the UK Action Plan (Anon. 1994), through 4630 (Groombridge and Jenkins 2002), 5416 (IUCN 2004), 5419 (Wilson and Reeder 2005) to 5487 (IUCN 2009a). For the purposes of this report, I have accepted the figure of 5487 which accords well with the most recent figures from The IUCN Red List of Threatened Species although Hilton-Taylor (pers. comm. 17) suggests that there are several additional recently described species.
  2. Wilson, D. E. & Reeder, D. M. (editors). 2005. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).
  3. Animal Diversity Web - Metatheria

Bibliografía

[Edital | Editá'l códigu]
  • MacDonald, D. "The Encyclopedia of Mammals". (2001). New York. Facts on File
  • Martin, R.E., Pine, R.H. and DeBlase A.F. "A Manual of Mammalogy". (2001). McGraw-Hill. San Francisco
  • Novak, R.M. "Walker’s Mammals of the World". (1999). Johns Hopkins University Press. Baltimore
  • Pough, F. H., C. M. Janis, and J. B. Heiser. Vertebrate Life. 6th ed. Upper Saddle River, NJ: Prentice Hall, 2001.
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Mamíferu
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