It doesn’t spoil the plot of Nicky Silver’s “Pterodactyls” to say that the final words of the play are: “It’s so dark.” This play is definitely dark. And definitely loony.

“But I don’t want to cure cancer,” the pterodactyl man says with infuriating insouciance. “I want to turn people into dinosaurs.” Sure, the panel is funny, but it’s not viral because ...

Pterodactyls begins with a brief history of ... and that undercuts the urgency that drives it up until that point. It’s darkly funny to watch the Duncans spin out of control, even if it doesn ...