Well, I'll take you to any period in the Cenozoic.
5 seconds sound clip from the X Minus 1 - A Gun for Dinosaur by L. Sprague de Camp classic radio drama series.
You can hear this line at 00:02:39 in the radio play.
Quote context
[...]
- Just whiskey, please. No soda.
- Ice?
- Good heavens, no. I have been in America for some time, but not that long.
- Well, to a fine dinosaur, eh?
- Well, now, just a moment. I won't take you hunting Late Mesozoic dinosaur.
- Why not?
- How much do you weigh? About 9 stone?
- Yeah, I thought so. It's not heavy enough.
- But your advertisement! You said, Safaris arranged to any time period.
- Well, I'll take you to any period in the Cenozoic.
- I'll get you a shot at any entelodont or even mammoth or mastodon... and they have fine heads.
- But I'll jolly well not take you to the Jurassic or the Cretaceous. You're just too small.
- Well, what's my weight got to do with it?
- Now, look here, old boy, what did you think you were gonna shoot those dinosaur with?
[...]