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Obdurodon is a genus of extinct platypus-like Australian monotreme which lived from the Late Oligocene to the Late Miocene.Three species have been described in the genus, the type species Obdurodon insignis, plus Obdurodon dicksoni and Obdurodon tharalkooschild.
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 ...
Yinotheria is a proposed basal subclass clade of crown mammals uniting the Shuotheriidae, an extinct group of mammals from the Jurassic of Eurasia, with Australosphenida, a group of mammals known from the Jurassic to Cretaceous of Gondwana, which possibly include living monotremes. [3]
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 ...
Fictional monotremes (1 C, 11 P) M. Monotremes of New Guinea (5 P) O. Ornithorhynchidae (1 C, 4 P) P. Prehistoric monotremes (1 C, 21 P)
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
The weight of the type specimen when it was alive was estimated to be 2 to 3 kilograms (4.4 to 6.6 lb). [5] The male is larger than the female, further differentiated by the spurs on its hind legs. [ dubious – discuss ] The species has five claws on each foot like the eastern long-beaked echidna , and has short, very fine and dense fur ...
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 ...