单词	polyphyletic
释义	polyphyletic /ˌpɒlɪfʌɪˈlɛtɪk / adjective Biology (Of a group of organisms) derived from more than one common evolutionary ancestor or ancestral group and therefore not suitable for placing in the same taxon: the aschelminthes may be a polyphyletic grade... The present study, as well as previous molecular studies, suggest that the oegopsid squids represent a polyphyletic group with uncertain phylogenetic affinities. Loriciferans were originally assigned to the paraphyletic or polyphyletic group called Aschelminthes. The taxonomy of the group is not well resolved, with many family-group taxa considered paraphyletic or polyphyletic, and several subfamilies are unplaced at the family level.
随便看	irrationally Irrawaddy irrebuttable irrebuttable presumption irreclaimable irreclaimably irreconcilability irreconcilable irreconcilableness irreconcilably irrecoverable irrecoverably irrecuperable irrecusable irredeemability irredeemable irredeemably irredentism irredentist irreducibility irreducible irreducibly irreflexive irreformable irrefragable

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