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| 单词 | Prototheria |
| 释义 | Prototheria (once / 1313257 pages) n WORD FAMILY Prototheria USAGE EXAMPLESIn the earliest stage represented by the Monotremata or Prototheria, there was no intra-uterine development. Cunningham, J. T., Hormones and Heredity(2010) Huxley afterwards gave them the names of Prototheria, Metatheria, and Epitheria. Haeckel, Ernst Heinrich Philipp August, The Evolution of Man — Volume 2(2010) n echidnas; platypus Syn|Hyper subclass Prototheria class (biology) a taxonomic group containing one or more orders |
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