Metatheria

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Related to metatherians: Eutherians

Metatheria

see MARSUPIAL.
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References in periodicals archive ?
philander are probably characteristic of arboreal as opposed to terrestrial species, but this will be established only after data for other didelphids and basal metatherians of different locomotory style become available.
Exceptionally preserved North American Paleogene metatherians: adaptations and discovery of a major gap in the opossum fossil record.
This second common crus is absent in a Late Cretaceous metatherian from Montana (Meng and Fox, 1995).
Relatively complete developmental series of five eutherians, Mus musculus (Rodentia), Felis domestica (Carnivora), Sus scrofa (Artiodactyla), Manis javanica (Pholidota), and Tupaia javanica (Scandentia), and four metatherians, Monodelphis domestica (Didelphidae), Macropus eugenii (Macropodidae), Dasyurus viverrinus (Dasyuridae), and Perameles nasuta (Peramelidae) were examined.
Further, even under the best conditions, it is quite difficult to correlate systems when animals differ significantly, such as occurs in comparisons between eutherians and metatherians. To obtain sufficient taxonomic diversity, very often collections made by prior investigators must be used and in such cases exact stage or age data often are not available.
3, Maddison and Maddison 1992), and mapped onto independently determined phylogenies for both metatherians and eutherians (Novacek and Wyss 1986; Marshall et al.