雙門齒目

Multi tool use双门齿目 化石时期:晚漸新世至今
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沙大袋鼠 Macropus agilis
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科学分类 
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界: | 动物界 Animalia
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门: | 脊索动物门 Chordata
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纲: | 哺乳纲 Mammalia
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亚纲: | 兽亚纲 Theria
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下纲: | 后兽下纲 Metatheria
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上目: | 有袋上目 Marsupialia
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總目: | 澳洲有袋总目 Australidelphia
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目: | 双门齿目 Diprotodontia Owen, 1866
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模式属
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†双门齿兽属 Diprotodon Owen, 1838
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亞目
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袋熊亞目 Vombatiformes
袋貂亞目 Phalangeriformes
袋鼠亞目 Macropodiformes
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雙門齒目(学名:Diprotodontia)又稱袋鼠目,属脊索动物门哺乳纲,是一個包含約120種有袋類動物的目,其中有袋鼠、沙袋鼠、無尾熊與袋熊等。此外還有一些已滅絕的類群,如雙門齒科(Diprotodontidae)與袋獅科(Thylacoleonidae)。
雙門齒目中幾乎全部都是草食動物,少數屬於食蟲動物與雜食動物,不過這些食性可能是原來的草食者經過適應後的結果。雙門齒目生活於澳大利亞,已知最早的化石屬於漸新世。在大約5萬年前,早期人類到達澳大利亞之後,許多大型的雙門齒目逐漸滅絕。
參考文獻
Groves, Colin. Wilson, D. E., and Reeder, D. M. (eds), 编. Mammal species of the world 3rd edition. Johns Hopkins University Press. 16 November 2005: 43–70. ISBN 0-801-88221-4.
- The Taxonomicon
- Mikko Haaramo
[1] IMPLICATIONS OF A NEW SPECIES OF THE OLIGO-MIOCENE KANGAROO (MARSUPIALIA: MACROPODOIDEA) NAMBAROO, FROM THE RIVERSLEIGH WORLD HERITAGE AREA, QUEENSLAND, AUSTRALIA
按亞綱分類的哺乳類現存動物
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| 動物界 · 脊索動物門 · 脊椎動物亞門 · 羊膜動物
| | 原獸亞綱 Prototheria (泄殖腔類)
| 單孔目 Monotremata (針鼴及鴨嘴獸)
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| 兽亚纲 Theria |
後獸下綱 Metatheria (有袋類)
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美洲有袋总目 Ameridelphia | 負鼠目 Didelphimorphia · 鼩負鼠目 Paucituberculata
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| 澳洲有袋总目 Australidelphia | 微獸目 Microbiotheria (南猊) · 袋鼴目 Notoryctemorphia · 袋鼬目 Dasyuromorphia (包括袋鼬及袋獾) · 袋狸目 Peramelemorphia · 雙門齒目 Diprotodontia (袋鼠及其近親)
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| 真獸下綱 Eutheria (有胎盤類)
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非洲兽总目 Afrotheria | 非洲蝟目 Afrosoricida · 象鼩目 Macroscelidea · 管齒目 Tubulidentata (土豚) · 蹄兔目 Hyracoidea · 長鼻目 Proboscidea (象) · 海牛目 Sirenia (海牛及儒艮)
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| 异关节总目 Xenarthra | 有甲目 Cingulata(犰狳) · 披毛目 Pilosa (食蟻獸及樹懶)
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| 灵长总目 Euarchontoglires | 樹鼩目 Scandentia · 皮翼目 Dermoptera (鼯猴) · 靈長目 Primates · 嚙齒目 Rodentia · 兔形目 Lagomorpha
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| 勞亞獸總目 Laurasiatheria | 蝟形目 Erinaceomorpha(刺蝟及鼠蝟) · 鼩形目 Soricomorpha (鼩鼱及齒蝟) · 翼手目 Chiroptera (蝙蝠) · 鱗甲目 Pholidota (穿山甲) · 食肉目 Carnivora(包含鳍足類) · 奇蹄目 Perissodactyla · 鲸偶蹄目 Cetartiodactyla(偶蹄目 Artiodactyla · 鯨目 Cetacea)
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| 合弓綱中除了哺乳类还包括似哺乳爬行動物:盤龍目 Pelycosauria · 獸孔目 Therapsida,它们是哺乳动物的进化来源,都为化石物种
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