I think it's Early Archaic, corner notched, with enough size it was likely a hafted knife, so Kirk is as a good a name as any. I understand where Relicgrubber is coming from. The one face looks like it was kind of BSed. In this case, though, I think you're okay. Especially with the knife forms where they wanted those higher width to thickness ratios, and especially when working tough rock, the strategy shown here isn't all that uncommon. The piece started as a large flake/small spall, flat on one side, domed on the other. The knapper aggressively flaked the domed side to flatten out the biface as much as possible (and did a good job of it) but ignored the flat side other than to punch or pressure flake the finished edge. If the knife wasn't lost and got resharpened a bunch of times, it would have ended up looking more like a biface and less unifacial. I see this kind thing with some regularity on the bigger quartzite bifaces.
