The Whtetrock Stage was introduced by Cooper and Cooper (in Cooper, 1956, p. 6-7) "as a post-Canadian - pre-Chazyan chrono-stratographic unit" based on strata "in the Monitor and Antelope Ranges, flanking Antelope Valley, and in the Toquima Range of central Nevada", referred to as the Antelope Valley Limestone.
stage name | stage | The Stage | Portland Center Stage | Center Stage | 2013–14 UEFA Europa League group stage | Taking the Stage | Stage (theatre) | Stage Door Canteen | Single-stage-to-orbit | MCA Stage | Key Stage 3 | International Alliance of Theatrical Stage Employees | Syracuse Stage | Northern Stage | Key Stage 2 | End stage renal disease | Carry On series on screen and stage | Canadian Stage Company | You Can't Do That on Stage Anymore, Vol. 4 | You Can't Do That on Stage Anymore, Vol. 3 | Stage name | Stage Door | Rollcage Stage II | group stage | Center Stage (2000 film) | The Final Stage | Stage Society | Stage One | Stage |
Three species are named and described (Flower 1968) from the Garden City limestone of Whiterockian age near Logan and northern Utah, including the genotype Williamsoceras adnatum.