負鼠目（学名： Didelphimorphia ）是脊索动物门 哺乳纲的一目，属于美洲有袋总目，目前仅包含負鼠科一科，大部分生活在南美洲，只有北美负鼠生活在北美洲。

Opossums (/ ə ˈ p ɒ s ə m z /) are members of the marsupial order Didelphimorphia (/ d aɪ ˌ d ɛ l f ɪ ˈ m ɔːr f i ə /) endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 126 species in 18 genera.

Didelphimorphia is an order of marsupial mammals. Members of this order are called didelphimorphs, or opossums. They are primarily found in South America, though some are found in Central America and Mexico and one, the Virginia opossum, ranges into …

Most oc­cupy Cen­tral and South Amer­ica, but one species, Didel­phis vir­gini­ana, oc­curs through most of the con­ti­nen­tal United States. Liv­ing didel­phi­morphs are small to medium in size. Their mor­phol­ogy is often re­ferred to as "gen­er­al­ized," and they prob­a­bly dif­fer lit­tle in most re­spects from their Cre­ta­ceous an­ces­tors.

负鼠 是生活在 美洲 的 有袋动物，现今共有67个品种，分布几 乎遍及 南美洲 各地，其中有一种即 北美负鼠 进入了 北美洲。 负鼠目，是后兽亚纲下的一目。 负鼠是生活在美洲的有袋动物，现今共有67个品种，分布几 乎遍及南美洲各地，其中有一种即北美负鼠进入了北美洲。

2023年9月11日 · The order Didelphimorphia is the only representative of the infraclass Metatheria (marsupials) in North America. Opossums, as a group, are among the oldest, most primitive mammals of the New World. Some scientists call them living fossils because they have survived relatively unchanged for at least 50 million years.

Opossum is the common name for various small- to medium-sized marsupials comprising the mammalian order Didelphimorphia and found in the Western Hemisphere. Opossums, of which there are more than 60 species, are characterized by a long, naked tail; a long, pointed snout; opposable thumbs in the hands and feet; and ears that are naked (Grzimek ...

負鼠科 （学名： Didelphidae）是 哺乳纲 负鼠目 的一科，是一类生活在 美洲 的 有袋動物，現今共有67個物種，分佈幾乎遍及 南美洲 各地，其中有一種即 北美負鼠 進入了 北美洲，在 美國 和 加拿大 分佈亦極其廣泛。 [1] 负鼠目 Didelphimorphia. ^ Wilson, D.E. & Reeder, D.M. (编). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore, Maryland: Johns Hopkins University Press. 2005. ISBN 978-0-8018-8221-0.

Opossums are members of the marsupial order Didelphimorphia endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 120+ species in 19 genera. Opossums originated in South America and entered North America in the Great American Interchange following the connection of North and South America.

Didelphimorphia – This is an ancient lineage of small to medium-sized marsupials in the Neotropical Region. They occupy a wide diversity of habitats and macroniches (arboreal, scansorial, and semiaquatic; insectivores, frugivores, omnivores, and carnivores).