作者: K. E. Mate , M. S. Harris , J. C. Rodger
DOI: 10.1007/978-3-642-58301-8_6
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摘要: There are three quite distinct evolutionary lineages of mammals which have been separated for many millions years by time and place. The northern-origin (European, Asian, African North American) eutherian - often called placental the southern-origin monotremes (Australasian) marsupials (Australasian American).