Some 120 US Fossil Localities, grouped by State
http://www.iwaynet.net/~mperona/fossil.htm
Evidently by one M. Perona

Localities are generally very briefly described, but more detail can be found in literature references provided for many of the States (especially the Roadside Geology Series published by the Mountain Press Publishing Company).

Arizona -

Between Tucson and the Grand Canyon (Carboniferous-Permian; gastropods, brachiopods, echinoids, trilobites)

Near Payson, NE of Phoenix (Carboniferous; brachiopods)

Winkelman, S of Globe (Carboniferous-Permian; crinoids, trilobites, brachiopods)

Arkansas -

Near Westfork, S of Fayetteville (Carboniferous; bryozoans, brachiopods, crinoid debris, corals, cephalopods)

S of Leslie (Carboniferous; bryozoans, brachiopods, crinoids, plants, cephalopods, molluscs, trilobites)

California -

E of Amboy (Cambrian; trilobites)

E of Carpinteria (Pleistocene; gastropods)

W of Isla Vista (Pleistocene; molluscs)

Capitola, near Santa Cruz (Pliocene; molluscs, echinoids)

Topanga Canyon, near Los Angeles (Miocene; molluscs)

San Pedro area (Pleistocene; molluscs?)

Rincon Point, near Ventura (Plio/Pleistocene marine assemblages)

Coal Point, Isla Vista (Pleistocene marine assemblage)

Taylorsville, Plumas County (Jurassic; molluscs and plants)

Pleasanton, Alameda Co. (Miocene marine assemblage)

Redding, Shasta Co. (Cretaceous; molluscs)

Willows, Glen Co. (Jurassic; molluscs, ammonites)

Colorado -

S of Pueblo (Cretaceous; molluscs, ammonites)

Creede (Eocene; plants, insects)

Durango (Cretaceous; molluscs, ammonites)

Delaware -

Near Delaware City (Cretaceous; molluscs)

Florida -

Venice Beach, S of Tampa (Miocene?; shark teeth)

Apollo Beach, Fernandino Beach, Ponte Vedra Beach and Manasota Beach

(Miocene?; shark teeth and other vertebrates)

NE of Panama City (Miocene; molluscs, corals)

W of Tallahassee (Miocene/Pliocene; molluscs)

Georgia -

N of Lumpkin, Stewart County (Cretaceous; molluscs, shark teeth)

Hannahatchee Creek, Stewart Co. (Cretaceous; shark teeth)

Near Perry, Houston Co. (Eocene; molluscs, bryozoans, echinoids)

Near Rising Fawn (Carboniferous; bryozoans, crinoid fragments, blastoids)

Idaho -

Near Soda Springs (Triassic; ammonites)

Illinois -

Mazon Creek area (Cretaceous; plants, jellyfish, crustaceans, worms)

Near Mount Pleasant (Carboniferous)

Alton (Ordovician; trilobites)

Indiana -

Evansville area (Carboniferous; plants, molluscs)

Delphi, Carroll County (Silurian; brachiopods)

Crawford County (Carboniferous; brachiopods, blastoids, crinoids, pelecypods, bryozoans, brachiopods, gastropods, conularids, horn corals, shark teeth and scales, cephalopods, trace fossils)

N of Madison (Ordovician)

E of Bloomington (crinoids)

Near Woodburn (Devonian; corals, crinoids, bryozoans, brachiopods, trilobites and trace fossils)

Beachler's Nest, Montgomery Co. (crinoids)

Between Liberty and Brookville (trilobites)

Iowa -

Rockford Fossil & Prairie Park (Devonian; brachiopods, corals, gastropods, pelecypods, bryozoans, cephalopods, crinoids, fish teeth, and many microfossils)

Kansas -

Near Lebo (Carboniferous; brachiopods, molluscs, crinoids, bryozoans)

Near Sedan (Carboniferous; corals, conularids, marine invertebrates)

Between Lawrence and Kansas City (brachiopods)

Manhattan, in Tuttle Creek State Park (Carboniferous)

Wilson Creek State Park (pelecypods)

Kentucky -

Orphanage Road in northern Kentucky (Ordovician; trilobites, graptolites, crinoids, brachiopods)

Near Sulphur (Ordovician)

Near Springfield (brachiopods)

Between Louisville and Cincinnati (Ordovician)

Louisville (Ordovician; brachiopods, corals, bryozoans, cephalopods, molluscs)

Maine -

Near Rockwood, W shore of Moosehead Lake (Devonian; brachiopods and rare trilobites)

Sandyville Road near Hancock (Devonian; brachiopods)

Calvert Cliffs (Miocene; shark and other teeth, pelecypods, coral)

College Park, Paint Branch Creek (Cretaceous; silicified and lignitized wood)

Massachusetts -

South Hadley, below Holyoke Dam on the E side of the Connecticut River (plants)

Michigan -

From Petosky N along the Lake Michigan shoreline towards Mackinac City (Silurian?;coral)

Minnesota -

Near St. Paul (Ordovician; sponges, coral, brachiopods, rare trilobites)

North of Eagan (Ordovician)

Mississippi -

NW of Tupelo, Lee County (Cretaceous; molluscs)

Missouri -

Near Booneville, Cooper County (Carboniferous; plants)

Near Clifton City, Cooper Co. (Devonian; crinoids, brachiopods, cephalopods, fish teeth and vertebrae, corals (horn and tabulate), pelecypods, trilobites, carbonized worms)

Montana -

SW of Glendive (ammonites and baculites)

Nebraska -

Near Weeping Water (Carboniferous; coral)

Nevada -

Near Jarbridge Junction in NE Nevada (requires a sturdy 4-wheel drive) (Eocene; plants)

N of Pahrump (Carboniferous; corals, bryozoans, brachiopods, crinoid debris)

Mina, S of Fallow (Triassic; corals, brachiopods)

New Jersey -

Cape May beaches (corals, bryozoans)

Big Brook and Poricy Brook, Monmouth County (shark teeth, belemnites, molluscs)

Middletown (Mesozoic)

New York -

Eighteen Mile Creek, S of Buffalo

Kingston exit, 90 miles N of New York City (brachiopods, coral)

Hamburg (Devonian; corals, trilobites, brachiopods)

Oneonta (Devonian; marine invertebrates)

Alden, N of Buffalo (cephalopods, gastropods, trilobites)

Near Little Falls (trilobites, graptolites)

North Carolina -

Aurora (mollusks, shark teeth)

Eden (Triassic; plants, vertebrate bones, insects)

North Topsail Beach (shark teeth)

Ohio -

Cincinnati (Ordovician)

Near Waynesville (Ordovician; brachiopods, gastropods, corals, bryozoans, crinoid stems, trilobites, and many trace fossils)

Near Georgetown (brachiopods, etc.)

East Fork Lake spillway (Ordovician; trilobites, pelecypods, gastropods, brachiopods, and rare edrioasteroids)

Near Oxford (Ordovician; brachiopods, gastropods, corals, trilobites, bryozoans)

Dayton vicinity roadcuts (Ordovician and Silurian)

Lodi (Carboniferous; brachiopods, bryozoans, infrequent trilobites, rare starfish, common crinoids, some conulariids, and occasional carbonized wood)

S of New Middletown (Carboniferous)

Cleveland (Devonian; plants, fishes)

Oklahoma -

S of Oklahoma City (Ordovician; trilobites)

Oregon -

Fossil (Eocene-Miocene; vertebrates, plants)

Pennsylvania -

Camp Horn Road outside Pittsburgh (Carboniferous; marine fauna including crinoids)

S of New Castle (Carboniferous; brachiopods, crinoids)

Rockville Quarry, Dauphin County, N of Harrisburg (coral, bryozoa, brachiopods, cephalopods, crinoids, trilobites, and trace fossils)

South Carolina -

Martin Marietta Mine, Cross (Eocene and Pliocene; molluscs, echinoids, vertebrates)

Harleyville, Giant Cement Co. (Eocene; vertebrates)

South Dakota -

Between City and the Badlands (Cretaceous)

Near Yankton (Cretaceous; molluscs, vertebrates)

Between Scenic and Rapid City, and near Wasta (Cretaceous; cephalopods and other invertebrates, vertebrates)

Near Eagle Butte (pelecypods, gastropods)

Tennessee -

W of Nashville (Silurian; brachiopods, crinoids: Ordovician; brachiopods, bryozoans, cephalopods, and colonial corals)

Texas -

Lake Worth, W of Fort Worth (Cretaceous; ammonites, echinoids, pelecypods)

San Antonio (Cretaceous)

Near Bryan (Eocene; molluscs, shark teeth)

Utah -

NW of Moab(petrified wood)

Straight Cliffs, Kane County (petrified wood)

Near Delta (Cambrian; trilobites)

Vermont -

Near Bridgeport, Addison County (Ordivician; trilobites, brachiopods, bryzoans, crinoids)

Virginia -

Shenandoah County (Ordovician; bryozoans, brachiopods, crinoids)

Washington -

Near Porter (Oligocene; crabs, gastropods, wood)

S of Bellingham (Eocene; plants)

Republic (Eocene & Oligocene; plants)

NW of Ellensburg (plants)

West Virginia -

N of Clarksburg (Carboniferous; fish teeth, bones, scales, coprolites)

N of Morgantown (Carboniferous; fish teeth, bones, scales, beautiful coprolites)

Wyoming -

Blue Forest in SW Wyoming (Eocene; petrified wood)

Near Buffalo (ammonites and corals)

South of Kemmerer (pelecypods, nearby petroglyphs as a dividend)

Warfield Springs, a "pay quarry" (fishes and occasional insects)

Ulrich's pay quarry at Kemmerer (fishes)