单词	eutherian
释义	eutherian /juːˈθɪərɪən / Zoology noun A mammal of the major group Eutheria, which excludes the marsupials and monotremes.Attempts to resolve the relationships of Xenarthra and Pholidota to other eutherian mammals have not yet been exhausted.... Hypertrophied upper canines which occur in the paratype, have never previously been recorded in kangaroos and represent an example of evolutionary convergence between these herbivorous marsupials and ungulate eutherians. Using stem-based definitions (and the respective terms Metatheria and Eutheria), generally-accepted eutherians are now known from the late Early Cretaceous of both Asia and North America. adjective Relating to or denoting eutherians.Several explanations have been proposed for the acquisition of genomic imprinting in eutherian mammals.... To conclude, obtaining more data for mammalian groups has given the major gain in understanding eutherian evolution. Phylogenetic trees depicting relationships among 16 eutherian orders are presented.
随便看	run into the sand run iron runish run its course runkelt runkle runkled runkle't runklie runkly run lace run length runless runlet run like a hairy goat run low (or short) runnability runnable runnably runnage runnel runneled runneling runnelled runnelling

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