I remember reading where these so-called evolution scientist said proof of humans having gills was those gill like appearances on a fetus’ neck were primordial gills - when in actuality they were the ears forming.
I remember, in the late 60s in school, being told about our “gill slits”. What a frickin’ joke.
Actually, those fetus tissues do look something like gills and do develop into gills in fish.
But in mammals they are reabsorbed as the fetus grows, becoming part of the pharynx, not the ears.
Science has never claimed to be perfect, or to get everything right the first time.
It does, however, have powerful mechanisms for correcting its mistakes, and this one was corrected long ago.