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Monotrematum sudamericanum is known only from two lower and one upper platypus-like teeth.It is the only known non-Australasian ornithorhynchid.The main difference, apart from continent and age, is its size: the teeth of Monotrematum are around twice as large as those of other similar species in the related genus Obdurodon.
The class Mammalia is divided into two subclasses based on reproductive techniques: egg-laying mammals (yinotherians or monotremes - see also Australosphenida), and mammals which give live birth . The latter subclass is divided into two infraclasses: pouched mammals ( metatherians or marsupials ), and placental mammals ( eutherians , for which ...
Monotremes (/ ˈ m ɒ n ə t r iː m z /) are mammals of the order Monotremata. They are the only group of living mammals that lay eggs, rather than bearing live young. The extant monotreme species are the platypus and the four species of echidnas. Monotremes are typified by structural differences in their brains, jaws, digestive tract ...
Monotremes are the only mammals (apart from the Guiana dolphin) [55] known to have a sense of electroreception, and the platypus's electroreception is the most sensitive of any monotreme. [56] [54] Feeding by neither sight nor smell, [57] the platypus closes its eyes, ears, and nose when it dives. [58]
Authorities in New York have arrested a man in connection with the disappearance of a 14-year-old girl who has since been found. Emmarae Gervasi disappeared from Suffolk County, N.Y., on Dec. 8 ...
Australia is home to two of the five extant species of monotremes and the majority of the world's marsupials (the remainder are from Papua New Guinea, eastern Indonesia and the Americas). The taxonomy is somewhat fluid; this list generally follows Menkhorst and Knight [ 1 ] and Van Dyck and Strahan, [ 2 ] with some input from the global list ...
A 23-year-old hiker who survived 13 days lost in the Australian wilderness after stumbling on two granola bars has thanked his rescuers for enduring “tough conditions” to find him.
Thousands of new species are found each year. Here are three of our most eye-catching stories from the past week. → Deep-sea creature — with yellowy tentacles and over 80 feet — is new species