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Microphis lineatus, the opossum pipefish, is a species of fish in the family Syngnathidae. It is found in fresh, brackish and marine waters in the West Atlantic region, ranging from New Jersey , United States, to São Paulo , Brazil, including the Caribbean and Gulf of Mexico .
Their common name opossum shrimps stems from the presence of a brood pouch or "marsupium" in females. The fact that the larvae are reared in this pouch and are not free-swimming characterises the order.
The Virginia opossum is the only species found in the United States and Canada. It is often simply referred to as an opossum, and in North America it is commonly referred to as a possum [3] (/ ˈ p ɒ s əm /; sometimes rendered as ' possum in written form to indicate the dropped "o").
The Virginia opossum is the original animal named "opossum", a word which comes from Algonquian wapathemwa, meaning "white animal". Colloquially, the Virginia opossum is frequently just called a "possum". [8] The term is applied more generally to any of the other marsupials of the families Didelphidae and Caenolestidae.
Virginia opossum (Didelphis virginiana). 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 the United States and Canada.
The remaining 30% are distributed across the Americas, primarily in South America, with thirteen species in Central America and a single species, the Virginia opossum, inhabiting North America north of Mexico. Marsupial sizes range from a few grams in the long-tailed planigale, [1] to several tonnes in the extinct Diprotodon. [2]
The largest species, the Virginia opossum (Didelphis virginiana), is the only marsupial to be found north of Mexico. The Virginia opossum has opposable toes on their two back feet. One of the synapomorphies of this genus is the hypertrophied spinous processes of the cervical vertebrae, which also interlock. As a result, this prevents and ...
Some sources call this subfamily the "American opossums", [2] [6] while others use that term for the whole family of opossums, Didelphidae. [1] The term may be redundant, though, since all opossums are native to the Americas, while their distant Australian taxonomic relatives, in the suborder Phalangeriformes are referred to as possums in ...