T-Rex: The Seven Wonders of the
T-Rex: PREHISTORIC WORLD!
T-Rex: This house! And car! What are they doing in the Cretaceous?
Dromiceiomimus: Goodness Cretaceous me!
T-Rex: And those five rocks over there.
Utahraptor: Why aren't there any better wonders?
T-Rex: I don't know.
T-Rex: That's an 8th wonder!
The author writes:
They didn't have a lot of engineering marvels way back in the time of the dinosaurs.
 Of the scant 18 Google hits for this phrase prior to publication of this comic, most refer to an episode of "Christchurch's nerdiest comedy show" and a headline from an article in the Sydney Morning Herald. The same headline is also echoed in other newspapers such as the Canberra Times. It seems this particular pun has only ever occurred to people from Australia or New Zealand.