Locality · BLM: casual collecting, no sale
Wheeler Amphitheater and the House Range
Millard, Utah, United States
The Wheeler Amphitheater and Marjum Pass in Utah's House Range expose the Wheeler Shale and Marjum Formation on BLM land, where anyone may split shale for personal-collection trilobites. The rules are the BLM casual-collecting rules, which forbid sale; the commercial Elrathia trade comes from the private claims nearby. Bring water, a hammer and a chisel, and expect to find Elrathia within an hour.
| Country | United States |
|---|---|
| State / province | Utah |
| County | Millard |
| Land manager / status | Bureau of Land Management |
| Access | Public dirt roads; high clearance advised; no services |
| Formations | Wheeler Shale, Marjum Formation |
| What is found | Elrathia, Asaphiscus, Olenoides, Modocia, Peronopsis |
Rules
BLM casual collecting rules: common invertebrate and plant fossils, reasonable amounts for personal use, hand tools only, no disturbance of claims, no sale or barter. Several private claims are posted; respect them.
Source: https://www.ecfr.gov/current/title-43/subtitle-A/part-49 (checked 2026-09-16).
Collecting rules
Elsewhere
Cite this article
Stratum Study. "Wheeler Amphitheater and the House Range" (Locality). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/localities/wheeler-amphitheater-and-the-house-range. Accessed 2026-09-20.
@misc{stratum-wheeler-amphitheater-and-the-house-range,
title = {Wheeler Amphitheater and the House Range},
author = {{Stratum Study}},
howpublished = {\url{https://stratum.black/study/localities/wheeler-amphitheater-and-the-house-range}},
year = {2026},
note = {Locality article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, commons. Accessed 2026-09-20.}
} Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.