Our distant fish ancestors had gills, so why don't humans? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Over hundreds of millions of ...

But in fish the folded neck structures develop into fleshy filaments called gills, which are ... by taking their first big breath, human babies break reliance on the womb and placenta and exit ...

The middle ear of humans evolved from fish gills, according to a study of a 438 million-year-old fossil fish brain. Scientists discovered the fossil of the braincase of a Shuyu fish. Despite its ...