TV series example of the word

The Big Bang Theory Season 4, Episode 24
I'm the new Homo in town.

The Big Bang Theory Season 1, Episode 11
...Homo habilis would've figured out to kill the guy with the runny nose.

The Big Bang Theory Season 1, Episode 6
A Homo habilis discovering his opposable thumbs says, "What?"

The Big Bang Theory Season 1, Episode 6
...I thought that Homo habilis line really put him in his place.

The Big Bang Theory Season 2, Episode 5
Homo novus doesn't know.