1.
the most primitive mammals comprising the only extant members of the subclass Prototheria.
最原始的哺乳动物，组成原兽亚纲唯一的现存种类。
2.
Of or belonging to the infraclass Eutheria, a division of mammals to which all the placental mammals belong.
真哺乳亚纲的关于或属于哺乳动物真兽亚纲的一个下纲，包括有胎盘哺乳动物
3.
an order of hooved mammals of the subclass Eutheria (including pigs and peccaries and hippopotami and members of the suborder Ruminantia) having an even number of functional toes.
有蹄哺乳动物的一目，属于真兽亚纲（包含猪、野猪、河马和反刍亚目的成员），功能脚趾为偶数。
4.
a major subclass of crustaceans.
甲壳纲动物的主要亚纲。
5.
A New Species of the Genus Mammomonogamus, from Hainan Province, China;
兽比翼线虫属一新种(线虫纲:小杆目)
6.
Acrasiomycota(cellular slime molds) A class of protoctists in the phylum Rhizopoda.
集胞粘菌门（细胞状粘菌）：根足亚纲的一类原生生物。
7.
Outline of a Preliminary Agreement on the Principles and Foundations for the establishment of a Confederation between the Republic of Croatia and the Federation
克罗地亚共和国与联邦成立邦联的原则和基础初步协定纲要
8.
Federation of Asian Veterinarian Associations
亚洲兽医协会联合会
9.
DESCRIPTION OF A NEW SPECIES OF THE GENUS HUNGAROCYPRIS vAVRA 1906(CRUSTACEA: OSTRACODA)
大型介虫属一新种——(甲壳纲:介形亚纲)
10.
an order in the subclass Acnidosporidia.
无丝孢子亚纲的一个目。
11.
an order in the subclass Telosporidia.
晚孢子亚纲的一个目。
12.
any member of the subclass Infusoria.
滴毛虫亚纲的所有成员。
13.
an order in the subclass Cnidosporidia.
丝孢子虫亚纲的一个目。
14.
a subclass of Sporozoa.
孢子虫类的一个亚纲。
15.
A flagellated protist that ingests food and lacks chlorophyll.
动鞭亚纲原生生物一种有鞭毛的原生生物，它摄取食物并缺乏叶绿素
16.
A NEW PALAEANODONT (MAMMALIA) FROM THE EARLY EOCENE OF WUTU BASIN, SHANDONG PROVINCE
山东昌乐早始新世五图组古乏齿兽类(哺乳纲)
17.
Also called duckbill semi aquatic egg-laying mammal native to Tasmania and southern and eastern Australia.
鸭嘴兽是半水栖卵生哺乳动物,原产于塔斯马尼亚岛和澳洲的南部及东部。
18.
ANALYSIS OF THE MAIN CHARACTERS FOR REGROUPING THE CLASS PROTURA (HEXAPODA)
原尾纲重新分群的特征分析(六足总纲)