| Undescribed gastropods from the upper Triassic section of the upper Triassic-lower Jurassic Gabbs Formation, Ammonite Canyon, Nevada. They derive from the latest Rhaetian Stage of the Triassic, roughly 202 million years old. |
| Undescribed gastropods from the upper Triassic section of the upper Triassic-lower Jurassic Gabbs Formation, Ammonite Canyon, Nevada. They derive from the latest Rhaetian Stage of the Triassic, roughly 202 million years old. |