檢視有袋目的原始碼

[[File:有袋目.jpg|缩略图|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E6%9C%89%E8%A2%8B%E7%9B%AE&step_word=&hs=0&pn=2&spn=0&di=29920&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3323532465%2C583440177&os=508045971%2C796863485&simid=4242796419%2C778621170&adpicid=0&lpn=0&ln=297&fr=&fmq=1634508981639_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2F5b0988e595225.cdn.sohucs.com%2Fq_70%2Cc_zoom%2Cw_640%2Fimages%2F20180613%2F3ec5520b94d24291aebc5da62fc7437b.jpeg%26refer%3Dhttp%3A%2F%2F5b0988e595225.cdn.sohucs.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1637101295%26t%3D57d9fd8fdac9de57b6f449232c08e4d0&fromurl=ippr_z2C%24qAzdH3FAzdH3F4_z%26e3Bf5i7_z%26e3Bv54AzdH3FwAzdH3Fdncm80ama_dbcndaAzdH3F%3Fret1%3Daaa88c_no_w&gsm=3&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined 原图链接][https://m.sohu.com/a/235617060_285320/?pvid=000115_3w_a 来自手机搜狐网]]]
'''有袋目'''是哺乳纲后兽次亚纲的1目。其幼仔出生时发育不全，雌兽有袋囊供幼仔继续发育。在大洋洲，有袋类与有胎盘类平行进化，适应辐射，产生许多不同的种类。现生有袋类共有9科80属250种。有袋类与有胎盘类在一些重要方面比较接近。如身体被毛、单一的下颌骨、具乳腺、胎生等；但有些方面还停留在比较原始的水平，如有泄殖腔，没有真正的胎盘。肩带上有乌喙骨的残余，腰带上有上耻骨等。<ref>[https://baijiahao.baidu.com/s?id=1709949535631049143&wfr=spider&for=pc 世界上最开心的动物！澳洲濒危物种短尾矮袋鼠，睡梦中都在微笑]鱼非雁</ref>