See soorce fer Diprotodontia

{{fixscots|date=Februar 2021}}

{{Automatic taxobox
| name = Diprotodontia<ref name=msw3>{{MSW3 Groves|pages=43–70}}</ref>
| fossil_range = {{Fossil range|28|0}}[[Late Oligocene]] – Recent
| image = Marsupialia collage.png
| taxon = Diprotodontia
| authority = [[Richard Owen|Owen]], 1866
| subdivision_ranks = [[Suborder]]s
| subdivision = 
[[Vombatiformes]]<br/>[[Phalangeriformes]]<br/>[[Macropodiformes]]
}}
The '''Diprotodontia''' ({{IPAc-en|d|aɪ|ˌ|p|r|oʊ|t|ɵ|ˈ|d|ɒ|n|ʃ|ⁱ|ə}}; {{lang-el|διπρωτός}} ''diprotos'', meanin "twa front" an οδοντος ''odontos'' meanin "teeth") are a muckle [[order (biology)|order]] o aboot 120 [[marsupial]] mammals includin the [[kangaroo]]s, [[Wallaby|wallabies]], [[possum]]s, [[koala]], [[wombat]]s, an mony ithers. Extinct diprotodonts include the [[rhinoceros]]-sized ''[[Diprotodon]]'', an ''[[Thylacoleo]]'', the sae-cried "marsupial lion".

<!--==Characteristics==
Livin diprotodonts are almost all yerbivores, as were most of those that are now extinct. A few insectivorous and omnivorous diprotodonts are known, and the [[Potoridae]] are almost unique among vertebrates in being largely fungivorous, but these seem to have arisen as relatively recent adaptations from the mainstream herbivorous lifestyle. The extinct thylacoleonids ("marsupial lions") are the only known group to have exhibited carnivory on a large scale.

Diprotodonts are restricted to A. The earliest known fossils date to the late Oligocene, but their genesis certainly lies earlier than this, as large gaps occur in Austrailie's fossil record, with virtually no fossil record at all in geologically active New Guinea. The great diversity of known Oligocene diprotodonts suggests the order began to diverge well beforehand.

Many of the mucklest and least athletic diprotodonts (along with a wide range of other Austrailien megafauna) became extinct when humans first arrived in Austrailie about 50,000 years ago. Their extinction possibly occurred as a direct result of hunting, but was more probably a result of widespread habitat changes brought about by human activities—notably the use of fire.

Two key anatomical features, in combination, identify Diprotodontia. Members of the order are, first, "diprotodont" (meaning "two front teeth"): they have a pair o muckle, procumbent incisors on the lower jaw, a common feature of many early groups of mammals and mammaliforms. The diprotodont jaw is short, usually with three pairs of upper incisors (wombats, like rodents have only one pair), and no lower canines. The second trait distinguishing diprotodonts is "syndactyly", a fusing of the second and third digits of the foot up to the base of the claws, which leaves the claws themselves separate. Digit five is usually absent, and digit four is often greatly enlarged.

Syndactyly is not particularly common (though the Austrailien omnivorous marsupials share it) and is generally posited as an adaptation to assist in climbing. Many modern diprotodonts, however, are strictly terrestrial, and have evolved further adaptations to their feet to better suit this lifestyle. This makes the history of the tree-kangaroos particularly convoluted: it appears that the animals were arboreal at some time in the far distant past, moving afterward to the ground—gaining long kangaroo-like feet in the process — before returning to the trees, where they further developed a shortening and broadening of the hind feet and a novel climbing method.-->
==References==
{{Reflist}}

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[[Category:Diprotodonts| ]]
[[Category:Mammal orders]]
[[Category:Extant Chattian first appearances]]
[[Category:Taxa named bi Richard Owen]]
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