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The largest difference between the opossum and non-marsupial mammals is the bifurcated penis of the male and bifurcated vagina of the female (the source of the term didelphimorph, from the Greek didelphys, meaning "double-wombed"). [38] Opossum spermatozoa exhibit sperm-pairing, forming conjugate pairs in the epididymis.
The common opossum (Didelphis marsupialis), also called the southern or black-eared opossum [2] or gambá, and sometimes called a possum, is a marsupial species living from the northeast of Mexico to Bolivia (reaching the coast of the South Pacific Ocean to the central coast of Peru), including Trinidad and Tobago and the Windwards in the Caribbean, [2] where it is called manicou. [3]
Virginia opossum tracks generally show five finger-like toes in both the fore and hind prints. [20] The hind tracks are unusual and distinctive due to the opossum's opposable thumb, which generally prints at an angle of 90° or greater to the other fingers (sometimes near 180°). Individual adult tracks generally measure 1.9 in long by 2.0 in ...
Virginia opossum, native to North America; White-eared opossum, native to South America; Phalangeriformes, also called (o)possums, any of a number of arboreal marsupial species native to Australia, New Guinea, and Sulawesi Common brushtail possum (Trichosurus vulpecula), a common possum in Australian urban areas, invasive in New Zealand
Didelphis is a genus of New World marsupials. The six species in the genus Didelphis, commonly known as Large American opossums, are members of the opossum order, Didelphimorphia. The genus Didelphis is composed of cat-sized omnivorous species, which can be recognized by their prehensile tails and their tendency to feign death when cornered.
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.
First, a word about semantics. Scientifically speaking, possums are marsupials that are native to Australia, while the opossum is found in North America, but Merriam-Webster advises that it’s A ...
The smallest species, indeed the smallest diprotodont marsupial, is the Tasmanian pygmy possum, with an adult head-body length of 70 mm (2 + 3 ⁄ 4 in) and a weight of 10 g (3 ⁄ 8 oz). The largest are the two species of bear cuscus , which may exceed 7 kg (15 lb 7 oz).