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Antechinus do not have a complete pouch, as in other marsupials, but simply a flap of skin covering the teats. [1] The number of teats in Antechinus species varies between different populations of the same species, [ 2 ] [ 18 ] and can be anywhere from six to 13. [ 18 ]
The pouch is a distinguishing feature of female marsupials and monotremes, [1] [2] [3] and rarely in males as well, such as in the yapok [4] and the extinct thylacine. The name marsupial is derived from the Latin marsupium , meaning "pouch".
The latter subclass is divided into two infraclasses: pouched mammals (metatherians or marsupials), and placental mammals (eutherians, for which see List of placental mammals). Classification updated from Wilson and Reeder's "Mammal Species of the World: A Taxonomic and Geographic Reference" using the "Planet Mammifères" website. [1]
Unlike most other marsupials, the gray short-tailed opossum does not have a true pouch. The scientific name Monodelphis is derived from Greek and means "single womb" (referring to the lack of a pouch) and the Latin word domestica which means "domestic" (chosen because of the species' habit of entering human dwellings). [3]
Marsupials are a diverse group of mammals belonging to the infraclass Marsupialia.They are natively found in Australasia, Wallacea, and the Americas.One of marsupials' unique features is their reproductive strategy: the young are born in a relatively undeveloped state and then nurtured within a pouch on their mother's abdomen.
An average litter consists of 2 to 4 young. Being marsupials, the newborns are naked and immature and thus undergo extensive development within the mother's pouch. [10] The gestation period (12.5 days) is the shortest recorded for any mammal. [3] Bandicoots are also the only metatherian marsupials that have placentas similar to eutherian ...
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Similarly, many species lack a full marsupial pouch, instead having a simple fold of skin surrounding the teats to provide some protection to the developing young. The dentition of dasyurids is also considered primitive, and differs from that of other marsupials, with a dental formula of: 4.1.2-3.4 3.1.2-3.4. Their dentition is similar to many ...