Holotheria

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Holotheria
Sus scrofa
Sailkapen zientifikoa e
Erreinua: Animalia
Filuma: Chordata
Kladoa: Eugnathostomata
Kladoa: Teleostomi
Goiklasea: Tetrapoda
(mailakatu gabea): Mammaliaformes
Klasea: Mammalia
Azpiklasea: Theriiformes
Infraklasea: Holotheria

Holotheria ugaztun klado bat da, batzuetan infraklase gisa izendatua (sailkapenaren arabera). Mammalia eta Theriaren arteko leku bat izango luke, nahiz eta gertuago dagoen Theriak ordezkatzen duenetik Mammalia osotik baino.

Sailkapena[aldatu | aldatu iturburu kodea]

McKenna eta Bell-ek jerarkia ezarri zuten 1997an:[1]

--o Holotheria Wible et al., 1995 
  |-- Chronoperatidae Fox, Youzwyshyn & Krause, 1992 (†)
  |-o Kuehneotheria McKenna, 1975 (†)
  `-o Trechnotheria McKenna, 1975 (≈Yangotheria Chow & Rich, 1982)
    |-o Amphiodontoidea Prothero, 1981 (†)
    |-o Spalacotherioidea Prothero, 1981 (†)
    `-o Symmetrodonta Simpson, 1925
      |-o Yinotheria Chow & Rich, 1982 (†)
      `-o Cladotheria McKenna, 1975 
        |-o Dryolestoidea Prothero, 1981 (†)
        `-o Amphiteriida Prothero, 1981
          `-o Zatheria McKenna, 1975
            |-o Peramura McKenna, 1975 (†)
            `-o Tribosphenida McKenna, 1975
              |-o Aegialodontia Butler, 1978 (†)
              `-o Theria Parker & Haswell, 1897 
                |-o Metatheria Huxley, 1880 
                `-o Eutheria Gill, 1872 

Ondoren eginiko lan batzuetan proposamen hori berrikusi eta hainbat aldaketa egin dira. Artikulu batzuk aipatzearren:

  • Wang, Clemens, Hu & Li, 1998.[2]
  • Rougier, Novacek, McKenna & Wible, 2001.[3]
  • Luo, Cifelli & Kielan-Jaworowska, 2001[4]
  • Luo, Kielan-Jaworowska & Cifelli, 2002[5]
  • Kielan-Jaworowska, Cifelli & Luo, 2004.[6]

Kladograma honetan aipatzen dira aurreko erreferentziatan aipatutako aldaketak:

--o Holotheria Wible et al., 1995 
  |-- Chronoperatidae Fox, Youzwyshyn & Krause, 1992 (†)
  `-o Trechnotheria McKenna, 1975 (≈Yangotheria Chow & Rich, 1982)
    |-o Amphiodontoidea Prothero, 1981 (†)
    |-- Austrotriconodontidae Bonaparte, 1990 (†)
    |-- Gobiconodontidae Chow & Rich, 1984 (†)
    |-- Amphilestidae Osborn, 1888 (†)
    |-o Spalacotherioidea Prothero, 1981 (†)
    `-o Symmetrodonta Simpson, 1925
      |-o Eutriconodonta Kermack, Musset & Rigney, 1973 (†)
      `-o Cladotheria McKenna, 1975 
        |-o Dryolestoidea Prothero, 1981 (†)
        `-o Zatheria McKenna, 1975
          |-o Amphiteriida Prothero, 1981 (†)
          |-o Boreosphenida Luo, Cifelli, & Kielan-Jaworowska, 2001 (†)
          | |-o Aegialodontia Butler, 1978 (†)
          | `-o Theria Parker & Haswell, 1897 
          |   |-o Metatheria Huxley, 1880 
          |   `-o Eutheria Gill, 1872 
          `-o Peramura McKenna, 1975 (†)

Erreferentziak[aldatu | aldatu iturburu kodea]

  1. McKenna, M.C., y Bell, S.K. (1997), Classification of Mammals Above the Species Level., Columbia University Press, New York. 0-231-11013-8.
  2. Wang, Y., Clemens, W. M., Hu, Y. & Li, C., 1998: A probable pseudo-tribosphenic upper molar from the Late Jurassic of China and the early radiation of the Holotheria. Journal of Vertebrate Paleontology: vol. 18.
  3. Rougier, G. W., Novacek, M. J., McKenna, M. C. & Wible, J. R., 2001: Gobiconodonts from the Early Cretaceous of Oshih (Ashile), Mongolia. American Museum Novitates: #3348
  4. Luo, Z.-X., Cifelli, R. L. & Kielan-Jaworowska, Z., 2001: Dual origin of tribosphenic mammals. Nature: Vol. 409, 4
  5. Luo, Z.-X., Kielan-Jaworowska, Z. & Cifelli, R. L., 2002: In quest for a phylogeny of Mesozoic mammals. Acta Palaeontologica Polonica: Vol. 47, #1
  6. Kielan-Jaworowska, Z., Cifelli, R. L. & Luo, Z.-X., 2004: Mammals from the Age of Dinosaurs – origins, evolution, and structure. Columbia University Press, New York, 2004