| 单词 | Proterotheriidae |
| 释义 | Proterotheriidae [´präd·ǝ·rō·thǝ`rī·ǝ´dē] PALEONTOLOGY A group of extinct herbivorous mammals in the order Litopterna which displayed an evolutionary convergence with the horses in their dentition and in reduction of the lateral digits of their feet. |
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