But someone I quoted said the egg came first.
Which is correct.
Egg laying species, ancestral to chickens, existed before chickens.
Consider this: "what came first, roman languages or french?"
Well, french is a roman language and evolved from latin, which is also a roman language.
So roman language existed first.
And no, there is no "first french speaker" either.
But there certainly was a time when french didn't exist and a later time when french did exist.
Yet french evolved
gradually, meaning there is no "first" french speaker.
As in: there was never a time when a non-french speaking mother raised a french speaking child.
You can take an abritrary generation in the recent past and say "well, NOW they are REALLY speaking french". But if you go back one generation further, to their parents in other words, those parents would speak virtually the same language. So it's arbitrary to say of generation X that it is speaking french while generation X-1 doesn't.
Ever new generation spoke the same language as their parents and grand-parents.
Yet over time, latin turned into spanish, italian, french and portugese.
This is the nature of gradual change. And biological evolution is no different.