"Which came first: the chicken or the egg"

Question

"Which came first, the chicken or the egg" is a common idiom in English. It's used when you want to describe a paradoxical situation where it's ambiguous which of two related things came first.

How would this best be expressed in Latin?

My initial thought is something like:

Utrum primum fuit: pullus aut ovum?

Is sum the right verb? Should it possibly be something like venio, or even the two together: Utrum primum esse veni?

Answer 1

Well, you can just use the formulation of Macrobius:

Ovumne prius fuerit, an gallina

Ovumne prius exstiterit, an gallina