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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.
Its range likely comes into contact with that of the common four-eyed opossum (P. canus) where the Atlantic Rainforest comes into contact with other forests, in Brazil and Paraguay. This is the only Philander species known from the Atlantic Rainforest.
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 common name "four-eyed opossum" comes from the spots above the eyes of this species looking like another set of eyes. The specific name " canus " comes from Latin and means "white" or " hoary ", [ 4 ] in reference to the lighter color of this species.
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]
The southeastern four-eyed opossum (Philander frenatus) is an opossum species native to South America. [2] It is found in Atlantic Forest ecoregions, in Brazil , Paraguay and Argentina . Description
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The largest species, the Virginia opossum (Didelphis virginiana), is the only marsupial to be found in North America, 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 ...