Paucituberculata

Paucituberculata
Temporal range: Late Paleocene (Itaboraian)-Recent
~58.7–0 Ma
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Clade:Metatheria
Infraclass:Marsupialia
Order:Paucituberculata
Trouessart 1898, Ameghino 1894
Suborders
  • See text
Diversity
7 extant species

Paucituberculata is an order of South American marsupials. Currently represented only by shrew opossums, over the course of the Cenozoic it included a wide variety of mammal species, including the Glires-like argyrolagoideans. The fossil record goes back to the Late Paleocene (Itaboraian in the SALMA classification).[1]

Classification

It is one of two clades of Ameridelphia, a paraphyletic group; genetic studies have shown these animals to be a sister group to Australidelphia (i.e., Didelphimorphia branched off first).[2][3]

The strange Polydolopiformes have historically been considered part of the clade, which would extend its range to the Paleocene. However, most modern researchers do not consider them to be closely related.[4]

Subdivision

The order is subdivided into:[5][6]

  • Plesion †Riolestes Goin et al. 2009[1]
  • Plesion †Dracolestes Goin et al. 2009
  • Plesion †Evolestes Goin et al. 2007
  • Superfamilia Caenolestoidea Trouessart 1898
  • Superfamilia †Palaeothentoidea Goin et al. 2009[7]
    • Familia †Pichipilidae Marshall 1980
      • †Pichipilus Ameghino 1890
      • †Phonocdromus Ameghino 1894
      • †Quirogalestes Goin & Candela 1998
  • Plesion †Perulestes Goin & Candela 2004
  • Plesion †Sasawatsu Goin & Candela 2004
  • Plesion †Pilchenia Ameghino 1903
    • Familia †Palaeothentidae Sinclair 1906
  • Plesion †Carlothentes Bown & Fleagle 1993
  • †Hondathenthes Dumont & Brown 1997[8]
    • Subfamilia †Palaeothentinae Sinclair 1906[9]
        • †Palaeothentes Ameghino 1887
        • †Palaepanorthus Ameghino 1902
      • Subfamilia †Decastinae Ameghino 1893
        • †Acdestis Ameghino 1887
        • †Trelewthentes Bown & Fleagle 1993
        • †Titanothentes Rae, Bown & Fleagle 1996
    • Familia †Abderitidae Ameghino 1889
      • †Abderites Ameghino 1887
      • †Pitheculites Ameghino 1902
      • †Parabderites Ameghino 1902

References

  1. 1 2 Riolestes at Fossilworks.org
  2. ↑ Schiewe, Jessie (2010-07-28). "Australia's marsupials originated in what is now South America, study says". LATimes.Com. Los Angeles Times. Archived from the original on 1 August 2010. Retrieved 2010-08-01.
  3. ↑ Nilsson, M. A.; Churakov, G.; , Sommer, M.; Van Tran, N.; Zemann, A.; Brosius, J.; Schmitz, J. (2010-07-27). "Tracking Marsupial Evolution Using Archaic Genomic Retroposon Insertions". PLoS Biology. Public Library of Science. 8 (7): e1000436. doi:10.1371/journal.pbio.1000436. PMC 2910653. PMID 20668664.
  4. ↑ Francisco J. Goin, Michael O. Woodburne, Ana Natalia Zimicz, Gabriel M. Martin, Laura Chornogubsky, A Brief History of South American Metatherians: Evolutionary Contexts and Intercontinental Dispersals, 2015
  5. ↑ Abello, 2007, p.410
  6. ↑ Paucituberculata at Fossilworks.org
  7. ↑ Palaeothentoidea at Fossilworks.org
  8. ↑ Hondathenthes at Fossilworks.org
  9. ↑ Paleothentidae at Fossilworks.org

Bibliography


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