Vinyl has been demonstrated to be able to cut and playback frequencies of up to 70khz, and many commercially released records from as far back as the 70s had data up to the mid 40khz range (and in fact this is required for quadraphonic playback).
Even if it's theoretically capable of doing that, I think the average cd player produces a better frequency range than the average record player. In any case, I thought the parent was talking about dynamic range, not frequency range.
Vinyl has been demonstrated to be able to cut and playback frequencies of up to 70khz, and many commercially released records from as far back as the 70s had data up to the mid 40khz range (and in fact this is required for quadraphonic playback).