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PBS
6 年
Convergence: Marsupials and Placentals
Marsupial and placental mammals diverged from a common ancestor more than 100 million years ago, and have evolved independently ever since. The two groups have different modes of reproduction ...
techexplorist
3 天
New study reveals the complex evolution of mammals’ upright posture
Credit: Peter Bishop/Museum of Comparative Zoology, © President and Fellows of Harvard College Mammals, including humans, are ...
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