Metatheria - Wikipedia
Metatheria is a mammalian clade that includes all mammals more closely related to marsupials than to placentals. First proposed by Thomas Henry Huxley in 1880, it is a more inclusive group than the marsupials; it contains all marsupials as well as many extinct non-marsupial relatives.
ADW: Metatheria: INFORMATION
From deserts and dry scrubland in Australia to tropical rain forests in South America, there are at least a few, and often many, species of Metatheria present. These animals occupy an enormous variety of terrestrial habitats throughout these two continents.
Marsupial | Definition, Characteristics, Animals, & Facts | Britannica
2024年10月11日 · Marsupial, any of more than 250 species belonging to the infraclass Metatheria (sometimes called Marsupialia), a mammalian group characterized by premature birth and continued development of the newborn while attached …
Theria - Wikipedia
Theria includes the eutherians (including the placental mammals) and the metatherians (including the marsupials) but excludes the egg-laying monotremes and various extinct mammals evolving prior to the common ancestor of placentals and marsupials.
Metatheria: Characters and Distribution | Chordata | Zoology
The subclass Theria constitutes the "modern" mammals. This group includes three infraclasses, viz., the probably ancestral Jurassic Pantotheria (= Trituberculata), marsupial Metatheria and placental Eutheria, the most highly organised and advanced mammals. Metatheria and Eutheria are presumed to have arisen from some untraced branch of Jurassic pantotheres and both diverged along their ...
The origin and early evolution of metatherian mammals: the …
2014年12月17日 · Today, metatherians are abundant and taxonomically and morphologically diverse in Central America, South America, and Australia, and are the dominant mammals on only one continent, Australia. However, during the Late Cretaceous, they were a diverse group on the northern continents of Laurasia.
Metatheria - Encyclopedia.com
2018年5月23日 · Metatheria (class Mammalia, subclass Theria) An infraclass that comprises the marsupials and their extinct relatives, sometimes included in the single order Marsupialia and now more usually divided into several orders.
Diversity and Phylogeny of Marsupials and Their Stem Relatives (Metatheria)
The diversity and phylogeny of marsupials and their stem relatives (collectively, Metatheria) are reviewed, from their divergence from their sister taxon (Eutheria) and the earliest fossil record of metatherians, to the relationships between and within the seven extant marsupial orders.
Palaeos Vertebrates Metatheria
Phylogeny: Metatheria: Australidelphia + *: Didelphimorphia + Paucituberculata. South American, apparently more basal, marsupials; based on molecular data; rostrum long; sagittal crest present; dental formula 5/5, 1/1, 3/3, 4/4; spermatozoa paired in epididimus.
The origin and early evolution of metatherian mammals: the
2014年12月17日 · Metatherians, which comprise marsupials and their closest fossil relatives, were one of the most dominant clades of mammals during the Cretaceous and are the most diverse clade of living mammals after Placentalia.
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