is that Neanderthals and Homo Sapiens
frequently mated with each other.
The Big Bang Theory Season 9, Episode 24
A Homo habilis discovering
his opposable thumbs says, "What?"
The Big Bang Theory Season 1, Episode 6
Homo novus doesn't know.
The Big Bang Theory Season 2, Episode 5
The same thing that happened
to Homo erectus.
The Big Bang Theory Season 4, Episode 24
...I thought that Homo habilis line
really put him in his place.
The Big Bang Theory Season 1, Episode 6