I was going to say that I have an awesome book about this stuff, and then I saw the author of the post is the author of that book. The book is called "Your Inner Fish" and it is EXCELLENT.

I started out as a fish, how did it end up like this?

Probably wrong here but if the divergence happened before gills were formed then we both evolved secondary jaws for different purposes

Also those structures seem to take up an awfully big part of the embryo if they're going to just become the hyoid and jaw, is there a more in between shot of the embryo developing?

And now my anxiety disorder uses of all of them to gradually destroy my tooth enamel and temporomandibular joints. Thanks evolution!

Our inner ears used to be part of the more complex jaws of something before us, if I remember correctly. I think there’s an arrow on the image showing it. Real cool.

Why is the shark embryo adorable and ours is not?

Ocean Man, take me by the hand,

lead me to the land, that you understand

Please babe! I can change! Here's proof!

This is something that gets examined pretty well in Your Inner Fish, particularly in the chapter named Your Inner Shark. It analyzes how the embryo develops and how the embryos are very similar to start.

Mafia be like: "back to the ocean you go"

Kind of a shame that our fish ancestors didn't have more gills. I wonder what we're missing. I mean, we're obviously missing something, right?