“mastodont”的概念、定义、翻译、参考文献-科学参考

mastodont

Encyclopedia

理学哺乳纲（化石）释
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。

单词	mastodont
释义	mastodont Encyclopedia 理学哺乳纲（化石）释 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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