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乳齿象
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乳齿象
Encyclopedia
理学
哺乳纲(化石)
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mastodont
乳齿象
狭义的作为一个属名,现在被认为是玛姆象属(Mammut)的同物异名,在分类学上已被弃置不用,仅作为美洲乳齿象(Mammut americanum)的通称。而广义的曾经被作为一个超科分类单元,包括了从晚渐新世到更新世的多种象类。随着系统演化理论和支序分系方法的兴起,乳齿象这一并系的类群逐渐被拆解,最终不再成为正式的分类单元。从现在的分类角度,广义的乳齿象类包括现在的古乳齿象类、玛姆象类、嵌齿象类,以及剑齿象类和真象类的最原始的成员。
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private bookstore
private branch exchange
private branch exchange, PBX
private business premises of opera actors
private cache
private circuit
private classical capacity of a quantum channel
private cloud
private costumes and paraphernalia
private credit
Private credit reference mode
private data
private data network
private deciphering algorithm
private distribution channels
private economy
private enforcement of anti-monopoly law
private enterprise
private equity fund,PE
private fabrics producers
private farm
private film companies in Thailand
private financial initiative mode
private forest landowners association
private gardens in Quanzhou
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