A ceratopsian, I think. That's the one with the big horned head and the frill over the neck, isn't it?
8 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 00:06:12 in the radio play.
Quote context
[...]
- Well, most of us are frightened at first but... Ah, it doesn't do to speak of it.
- I'm building a new house. I'm engaged, you know, getting married...
- Well, I'm determined to hang a dinosaur head over my fireplace or die in the attempt.
- Well, you want to think twice about that, you know.
- I know it's ridiculous but I'm determined to do something big for once.
[...]