Clearly a Great Spanged Fritillary, in Kansas I doubt you'd find anything else to confuse it with.

maybe either Aphrodite or S. cybele. This one looks a bit borderline between the two, at least to me. In Butterflies through Binoculars (East), Glassberg describes the dark brown on the hindwing as stopping short of the outer border of the post-median silver spots in the Great Spangled, and extending past the post-median spots, making the cream-colored band look a lot more narrow in the Aphrodite. See Butterflies through Binocs (East), Plate 28. The images Glassberg uses make this difference seem very distinct, with the cream band being very narrow in his Aphrodite, but in all of the Guide images here, it looks considerably wider. In the Guide images here, though, it's fairly obvious that the brown extends beyond the outer margins of each of the silver post-median spots...but in yours, the brown seems to extend beyond some of the spots, and stop even with, or even before, the outer edges of others. Does anyone know if these guys hybridize at all? Also, in BtB, Aphrodite's range isn't shown to include Kansas, so if it turns out to be Aphrodite, this could be an interesting record, perhaps? I'm far from an expert, though.