- Well, now, just a moment. I won't take you hunting Late Mesozoic dinosaur.
- Why not?

10 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 00:02:21 in the radio play.

Quote context

[...]

- These are stories of the future, adventures in which you'll live in a million could-be years on a thousand maybe worlds.

- The National Broadcasting Company, in cooperation with Galaxy Science Fiction Magazine, presents...

- Tonight's story, A Gun for Dinosaur by L. Sprague de Camp.

- 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?

- 130 pounds.

- 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.

[...]