ADJ.
so-called
MONOTREMATOUS + NOUN
olfactory, organs
PREP.
from
ADV.
clearly
adj
Of or pertaining to the Monotremata or monotremes.
Of the olfactory organ of a fish, having a single opening from which water flows in and out.
The anatomy of the olfactory organ of Belone belone differs clearly from so-called monotrematous olfactory organs.
Three-spined sticklebacks, similar to their Spinachia cousins, are monotrematous, that is, each olfactory organ has only a single naris.