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Verified by TroveRadar Field Database
Updated March 2026
150+ December Guides
December field guide overview
🗓️Monthly Browse Layer

December Field Guides by State

Use December as the timing layer, then choose the exact state route for mushrooms, fossils, or metal detecting instead of guessing from a continent-wide average.

Every state has three category pages in this month, which means the fastest route is now month, then state, then discipline.

States covered

50

one hub page per state for this month

Categories per state

3

mushrooms, fossils, and metal detecting

Visible targets

AmmoniteBelemniteBivalve Shell FossilGastropod Shell Fossil

examples pulled from live month-state guides

Choose a state

Start with the geography, then pick the discipline.

Each state hub bundles the three category routes for December, plus quick links to laws, nearby city pages, and follow-on planning pages.

Southeast Piedmont

Alabama

3 routes
AmmoniteBelemniteBivalve Shell FossilGastropod Shell Fossil
Open December in Alabama

Alaska Boreal

Alaska

3 routes
Mammoth ToothBurn MorelBirch BoleteAspen Bolete
Open December in Alaska

Desert Southwest

Arizona

3 routes
Elrathia TrilobiteDinosaur Bone FragmentDromaeosaur ToothSauropod Vertebra
Open December in Arizona

Ozarks

Arkansas

3 routes
TrilobiteOrthocone NautiloidBrachiopodSpirifer Brachiopod
Open December in Arkansas

California Coast

California

3 routes
Bivalve Shell FossilGastropod Shell FossilShark ToothMako Shark Tooth
Open December in California

Central Rockies

Colorado

3 routes
Elrathia TrilobiteAmmoniteBaculiteInoceramid Clam
Open December in Colorado

New England

Connecticut

3 routes
Mastodon ToothAmberSpanish Silver RealeSpanish Cob Coin
Open December in Connecticut

Mid-Atlantic Coast

Delaware

3 routes
AmmoniteBelemniteBivalve Shell FossilShark Tooth
Open December in Delaware

Florida Peninsula

Florida

3 routes
AmmoniteBelemniteBivalve Shell FossilGastropod Shell Fossil
Open December in Florida

Southeast Piedmont

Georgia

3 routes
Shark ToothMegalodon ToothMako Shark ToothSawfish Rostral Tooth
Open December in Georgia

Northern Rockies

Idaho

3 routes
Elrathia TrilobiteAmmoniteBaculiteInoceramid Clam
Open December in Idaho

Upper Midwest

Illinois

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Illinois

Upper Midwest

Indiana

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Indiana

Upper Midwest

Iowa

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Iowa

Great Plains

Kansas

3 routes
AmmoniteBaculiteBelemniteProductid Brachiopod
Open December in Kansas

Appalachians

Kentucky

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Kentucky

Mid-South Rivers

Louisiana

3 routes
AmmoniteBelemniteBivalve Shell FossilGastropod Shell Fossil
Open December in Louisiana

New England

Maine

3 routes
Mastodon ToothAmberSpanish Silver RealeSpanish Cob Coin
Open December in Maine

Mid-Atlantic Coast

Maryland

3 routes
AmmoniteBelemniteBivalve Shell FossilShark Tooth
Open December in Maryland

New England

Massachusetts

3 routes
Mastodon ToothAmberSpanish Silver RealeSpanish Cob Coin
Open December in Massachusetts

Great Lakes

Michigan

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Michigan

Great Lakes

Minnesota

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Minnesota

Mid-South Rivers

Mississippi

3 routes
AmmoniteBelemniteBivalve Shell FossilGastropod Shell Fossil
Open December in Mississippi

Ozarks

Missouri

3 routes
TrilobiteOrthocone NautiloidBrachiopodSpirifer Brachiopod
Open December in Missouri

Northern Rockies

Montana

3 routes
Elrathia TrilobiteAmmoniteBaculiteInoceramid Clam
Open December in Montana

Great Plains

Nebraska

3 routes
AmmoniteBaculiteBelemniteProductid Brachiopod
Open December in Nebraska

Desert Southwest

Nevada

3 routes
Elrathia TrilobiteDinosaur Bone FragmentDromaeosaur ToothSauropod Vertebra
Open December in Nevada

New England

New Hampshire

3 routes
Mastodon ToothAmberSpanish Silver RealeSpanish Cob Coin
Open December in New Hampshire

Northeast

New Jersey

3 routes
TrilobiteBelemniteBrachiopodBryozoan Colony
Open December in New Jersey

Southwest Highlands

New Mexico

3 routes
Elrathia TrilobiteDinosaur Bone FragmentDromaeosaur ToothSauropod Vertebra
Open December in New Mexico

Northeast

New York

3 routes
TrilobiteBelemniteBrachiopodBryozoan Colony
Open December in New York

Appalachians

North Carolina

3 routes
TrilobiteOrthocone NautiloidBrachiopodSpirifer Brachiopod
Open December in North Carolina

Prairie Lakes

North Dakota

3 routes
AmmoniteBaculiteBelemniteProductid Brachiopod
Open December in North Dakota

Interior Northeast

Ohio

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Ohio

Southern Plains

Oklahoma

3 routes
TrilobiteAmmoniteBaculiteBelemnite
Open December in Oklahoma

Pacific Northwest

Oregon

3 routes
Petrified WoodFossil Leaf ImpressionFossil ConeAmber
Open December in Oregon

Northeast

Pennsylvania

3 routes
TrilobiteIsotelus TrilobiteBelemniteBrachiopod
Open December in Pennsylvania

New England

Rhode Island

3 routes
Mastodon ToothAmberSpanish Silver RealeSpanish Cob Coin
Open December in Rhode Island

Atlantic Barrier Islands

South Carolina

3 routes
Shark ToothMegalodon ToothMako Shark ToothSawfish Rostral Tooth
Open December in South Carolina

Great Plains

South Dakota

3 routes
AmmoniteBaculiteBelemniteProductid Brachiopod
Open December in South Dakota

Appalachians

Tennessee

3 routes
TrilobiteOrthocone NautiloidBrachiopodSpirifer Brachiopod
Open December in Tennessee

Southern Plains

Texas

3 routes
AmmoniteBelemniteProductid BrachiopodBivalve Shell Fossil
Open December in Texas

Central Rockies

Utah

3 routes
Elrathia TrilobiteAmmoniteBaculiteInoceramid Clam
Open December in Utah

New England

Vermont

3 routes
Mastodon ToothAmberSpanish Silver RealeSpanish Cob Coin
Open December in Vermont

Mid-Atlantic Coast

Virginia

3 routes
TrilobiteAmmoniteBelemniteOrthocone Nautiloid
Open December in Virginia

Pacific Northwest

Washington

3 routes
Petrified WoodFossil Leaf ImpressionFossil ConeAmber
Open December in Washington

Appalachians

West Virginia

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in West Virginia

Great Lakes

Wisconsin

3 routes
TrilobiteIsotelus TrilobiteOrthocone NautiloidBrachiopod
Open December in Wisconsin

Northern Rockies

Wyoming

3 routes
Elrathia TrilobiteAmmoniteBaculiteInoceramid Clam
Open December in Wyoming
🧭

Take TroveRadar Into the Field

Pin december field plans to your field journal. Get offline maps, real-time species ID, and community find reports.

Why add a December browse page instead of linking straight to deep pages?
Because the useful decision sequence is month, then state, then category. The December browse layer reduces dead-end navigation and makes it easier to compare nearby options before committing to one route.
Does every state have all three December categories?
Yes. TroveRadar currently exposes mushrooms, fossils, and metal detecting for every state in December, which creates a consistent 50-state browse grid for this month.
What should you open after the state hub?
Open the matching category route when you know the discipline, or use the state hub itself if you still need permit context, nearby-city ideas, and the best follow-on pages for the trip plan.