Parouse.com
 Parouse.com



Microbiotheriidae †Woodburnodontidae

Microbiotheria
Microbiotheria
is an australidelphian marsupial order that encompasses two families, Microbiotheriidae
Microbiotheriidae
and Woodburnodontidae,[1] and is represented by only one extant species, the monito del monte, and a number of extinct species known from fossils in South America, Western Antarctica, and northeastern Australia.[2] Although once thought to be members of the order Didelphimorphia
Didelphimorphia
(the order that contains the Virginia opossum), an accumulation of both anatomical and genetic evidence in recent years has led to the conclusion that microbiotheres are not didelphids at all, but are instead most closely related to the Australasian marsupials; together, the microbiotheres and the Australian orders form the clade Australidelphia
Australidelphia
which are now thought to have first evolved in the South American region of Gondwana. Biogeography[edit] The oldest microbiothere currently recognised is Khasia cordillerensis, based on fossil teeth from Early Palaeocene deposits at Tiupampa, Bolivia. Numerous genera are known from various Palaeogene and Neogene
Neogene
fossil sites in South America. A number of possible microbiotheres, again represented by isolated teeth, have also been recovered from the Middle Eocene
Eocene
La Meseta Formation of Seymour Island, Western Antarctica. Finally, several undescribed microbiotheres have been reported from the Early Eocene
Eocene
Tingamarra Local Fauna in northeastern Australia; if this is indeed the case, then these Australian fossils have important implications for understanding marsupial evolution and biogeography. The distant ancestors of the monito del monte, it is thought, remained in what is now South America
South America
while others entered Antarctica
Antarctica
and eventually Australia
Australia
during the time when all three continents were joined as part of Gondwana.[3][4] References[edit]

^ Goin, F. J.; Zimicz, N.; Reguero, M. A.; Santillana, S. N.; Marenssi, S. A.; Moly, J. J. (October 2007). "New marsupial (Mammalia) from the Eocene
Eocene
of Antarctica, and the origins and affinities of the Microbiotheria". Revista de la Asociación Geológica Argentina. 62 (4): 597–603. ISSN 1851-8249. Retrieved 2017-02-12.  ^ Gardner, A.L. (2005). "Family Microbiotheriidae
Microbiotheriidae
(p. 21)". In Wilson, D.E.; Reeder, D.M. Mammal
Mammal
Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 21. ISBN 978-0-8018-8221-0. OCLC 62265494.  ^ Schiewe, Jessie (2010-07-28). "Australia's marsupials originated in what is now South America, study says". LATimes.Com. Los Angeles Times. Retrieved 2010-08-01.  ^ Nilsson, M. A.; Churakov, G.; Sommer, M.; Van Tran, N.; Zemann, A.; Brosius, J.; Schmitz, J. (2010-07-27). Penny, David, ed. "Tracking Marsupial
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. 

External links[edit]

Mikko's Phylogeny Archive Entry in Encyclopedia of Life

v t e

Extant mammal orders

Kingdom Animalia Phylum Chordata Subphylum Vertebrata (unranked) Amniota

Yinotheria

Australosphenida

Monotremata (Platypus and echidnas)

Theria

Metatheria ( Marsupial
Marsupial
inclusive)

Ameridelphia

Paucituberculata (Shrew opossums) Didelphimorphia
Didelphimorphia
(Opossums)

Australidelphia

Microbiotheria
Microbiotheria
(Monito del monte) Notoryctemorphia ( Marsupial
Marsupial
moles) Dasyuromorphia
Dasyuromorphia
(Quolls and dunnarts) Peramelemorphia
Peramelemorphia
(Bilbies and bandicoots) Diprotodontia
Diprotodontia
(Kangaroos and relatives)

Eutheria ( Placental
Placental
inclusive)

Atlantogenata

Xenarthra

Cingulata (Armadillos) Pilosa
Pilosa
(Anteaters and sloths)

Afrotheria

Afrosoricida
Afrosoricida
(Tenrecs and golden moles) Macroscelidea (Elephant shrews) Tubulidentata (Aardvark) Hyracoidea (Hyraxes) Proboscidea
Proboscidea
(Elephants) Sirenia
Sirenia
(Dugongs and manatees)

Boreoeutheria

Laurasiatheria

Eulipotyphla
Eulipotyphla
(Hedgehogs, shrews, moles and relatives) Chiroptera (Bats) Pholidota (Pangolins) Carnivora
Carnivora
(Dogs, cats and relatives) Perissodactyla (Odd-toed ungulates) Artiodactyla (Even-toed ungulates and cetaceans)

Euarchontoglires

Rodentia (Rodents) Lagomorpha
Lagomorpha
(Rabbits and pikas) Scandentia (Treeshrews) Dermoptera (Colugos) Primates

Taxon identifiers

Wd: Q14196619 ADW: Microbiotheria EoL: 1682 GBIF: 790 ITIS: 552293 MSW: 10600001