Permits & rules
Utah BLM fossils: invertebrate vs vertebrate
A trilobite hash plate and a dinosaur bone are both “fossils.” They are not the same legal object.
The split that matters
- Common invertebrate fossils (many shells, some trilobites, other common marine invertebrates) and some plant fossils may fall under casual personal collecting on ordinary BLM — same idea as rocks: reasonable amounts, personal use, hand tools, no sale.
- Vertebrate fossils (bones, teeth, and other remains of animals with backbones) are generally not casual-use souvenirs. Federal paleontology rules treat these as scientific resources. Leave them. Photograph them. Report a significant find to the field office rather than loading the truck.
If you cannot tell what it is
Leave it. “I thought it was just a rock” is how vertebrate material walks off a site. When in doubt it is not a hobby specimen.
Still off-limits even if it is an invert
- National parks and most monuments / special areas
- Utah State Parks without written authorization
- SITLA and private land
- Any posted closure or ACEC with fossil restrictions
- Anything you plan to sell
Practical rule for this site
Agate, jasper, common petrified wood on confirmed open BLM: read the cap pages. Bone, teeth, eggs, and “this might be dino”: stop.
Informational only — not legal advice. Paleontology rules are specific and enforced. Confirm with the BLM field office. Do not collect vertebrate fossils under a rockhounding blog’s say-so — including this one.