Antonyms for Platyrrhinic (opposite meaning)
WordNet sense 1 (of or related to Old World monkeys that have nostrils together and opening downward):
catarrhine, catarrhinian
WordNet sense 2 (having a long narrow nose):
leptorhine, leptorrhine, leptorrhinian, leptorrhinic
From the ODE community, based on WordNet
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