...Homo habilis would've figured out
to kill the guy with the runny nose.
The Big Bang Theory Season 1, Episode 11
A Homo habilis discovering
his opposable thumbs says, "What?"
The Big Bang Theory Season 1, Episode 6
is that Neanderthals and Homo Sapiens
frequently mated with each other.
The Big Bang Theory Season 9, Episode 24
The same thing that happened
to Homo erectus.
The Big Bang Theory Season 4, Episode 24
Homo novus doesn't know.
The Big Bang Theory Season 2, Episode 5