Find fossils
Explore fossil occurrences from the Paleobiology Database, with formation links, age, locality context, preservation details, citations, and original records.
Your field map for what lies beneath
Find more.
Explore farther.
Discover fossils, collectible rocks, minerals, gems, and the geology around you—then take the map offline* when the trail leaves your signal behind.
Nationwide coverage Field-ready offline maps* Free use without an account
Download LithoMapPut U.S. geology in your pocket.Choose Google Play or the App Store.
Turn curiosity into a field plan
See where geology and discovery meet.
LithoMap brings trusted geologic maps and scientific occurrence records into one approachable view. Start from your location or search anywhere in the country, switch on only the discoveries you care about, and tap the map to understand what you are seeing.
Discover collectible rocks & minerals
Filter mapped USGS records for collectible rocks, minerals, gems, and precious metals—without clutter from ordinary construction pits and quarries.
Read the geology
See consistently colored geologic units, adjust overlay visibility, and tap the map to learn about the formations beneath the landscape.
Understand public-land context
Add public-land layers to your research, then confirm current boundaries, access, and collecting rules with the responsible land manager.
Search any place
Search for a city, address, or landmark, choose the right result, and immediately explore the geology and records around it.
Build your private field notebook*
Save a location the moment it matters, give it a title, add notes and up to six photos, then search your collection and reopen that place on the map later.
Paid feature. Plan requirements are shown on the Plans page.
See LithoMap in the field
See the map—and understand what you tap.
LithoMap does more than place dots and colors on a screen. Open a mapped feature to see the available formation, fossil, or mineral record details and the source behind them.
Paid feature. Plan requirements are shown on the Plans page.
Built for real curiosity
Landscapes tell a story. The details make it personal.
From canyon-scale layers to a piece of petrified wood or an unpolished mineral, LithoMap helps connect what catches your eye with the geology around it.
The feature built for the field
Your signal can disappear.
Your map doesn’t have to.*
Save a selected area before you leave coverage and bring its map, geology, fossil records, public-land context, and available rock and mineral records with you. Interrupted downloads can resume instead of forcing you to start over.
Explore offline plans1
Choose an areaUse the visible map or tap the place you need.
2
Download before your tripSee progress, pause, and resume if the connection drops.
3
Explore beyond coverageOpen the saved area when cellular service is unavailable.
More than colored shapes on a map
Useful detail without the research scavenger hunt.
Focused filters
Choose the fossil, rock, mineral, gem, or metal categories you want to see.
Search without guessing
See multiple matches for common place names, then choose the city, landmark, or address you actually mean.
Formation details
Tap a geologic unit for its name, age, description, source, and related context.
Occurrence details
Tap an available fossil, petrified wood, rock, or mineral record to see its reported name, scientific or locality context, source, and honest data limitations.
Readable in changing terrain
Adjust geology visibility between Light, Balanced, and Bold while labels and roads remain useful.
Consistent map colors
LithoMap assigns deterministic colors so the same unit stays recognizable across live and offline maps.
Private place sharing*
Offline Plus members can send a saved place directly to another paid member or create a secure seven-day link. Photos, email addresses, and real names are not included.
Requires Offline Plus.
Choose how far you want to go
Explore free. Go offline when you need it.
Use the live map free without creating an account. Choose Basic or Plus when you want offline areas, private field notes, and more ways to organize a trip.
Explore Free
$0No account required
Explore the live map and research the geology and discoveries around you.
- Nationwide geology across the United States
- Fossil occurrence discovery, including petrified wood records
- Collectible rocks, minerals, gems, and precious metals
- Public-land context
- GPS, place search, filters, and formation details
- No account required for live exploration
Offline Basic
$5.99per month · $49.99/year
Try the complete Basic field kit free for 7 days, then keep it for occasional trips and focused offline areas.
- 7-day free trial for eligible new subscribers
- Everything in Explore Free
- 3 active offline areas
- 6 completed downloads each month
- 3 GB monthly transfer
- Up to 10 private places saved on this device
- Titles, notes, and up to 6 private photos per place
- Receive places directly from a Plus member
- Resumable downloads and fair queue estimates
Offline Plus
$9.99per month · $84.99/year
More offline coverage, organization, and private sharing for frequent field explorers.
- Everything in Offline Basic
- 10 active offline areas
- 20 completed downloads each month
- 10 GB monthly transfer
- Unlimited places saved on this device
- Private sharing by exact LithoMap username or secure link
- Folders, searchable tags, and GeoJSON export
Need a little more? Active members can add 3 completed-download credits and 3 GB of transfer for a one-time $3.99. Credits remain available while the membership is active, and interrupted or failed downloads do not use them.
Built for return trips
Keep the places worth remembering.*
Paid members can save their current GPS position in the field—even without a signal—then add a title, notes, and up to six private photos. Search saved places later and reopen any one on the map. The saved details, photo copies, and optional profile picture stay on the member’s device.
Basic saves 10 · Plus saves unlimitedPlus members choose a private sharing username and can send directly to another paid member or create a secure seven-day link. Recipients can keep the place in a read-only Shared With Me inbox; Basic or Plus is required to save an editable copy. Photos are never included. “Unlimited” is subject to available device storage.
Paid feature. Plan requirements are shown on the Plans page.
Straight answers before the trail
Questions people ask about LithoMap
How does the 7-day Offline Basic free trial work?*
Eligible new subscribers can choose the monthly or annual Offline Basic plan and use its paid features free for seven days. After the trial, the selected plan automatically renews at $5.99 per month or $49.99 per year unless canceled before the trial ends. Apple asks customers to cancel at least 24 hours before the trial ends. Apple or Google confirms eligibility, the renewal price, and the final terms before purchase. Introductory-trial eligibility is limited by the applicable store and subscription history.
What can I find with LithoMap?
LithoMap combines United States geology with fossil occurrences, petrified wood records, collectible rocks, minerals, gems, precious metals, and public-land context in one map.
Can I use LithoMap without cell service?*
Yes. A paid offline plan lets you save selected areas before a trip. Saved areas can include the base map, geology, fossil records, public-land context, and available rock and mineral records. Download and open an area once before leaving service so you can confirm it is ready.
Where does LithoMap work?
LithoMap is designed for the United States, including all 50 states and the District of Columbia. What appears at a particular location depends on the coverage and detail available from each source dataset.
Paid feature. Plan requirements are shown on the Plans page.
Read all questions and answersAdventure starts with a better map