1 ► Alabama, Elmore County, Wetumpka — Wetumpka Impact Crater —

On U.S. 231 at East South Boundary Street, on the right when traveling west on U.S. 231.

2 ► Alaska, Matanuska-Susitna Borough, Sutton-Alpine — Geology —

On Glenn Highway (State Highway 1 at milepost 61.6) east of Chickaloon Way, on the left when traveling east.

3 ► Alaska, Matanuska-Susitna Borough, Sutton-Alpine — Petrified Wood —

On Glenn Highway (State Highway 1 at milepost 61.6) east of Chickaloon Way, on the left when traveling east.

4 ► Arizona, Apache County, Adamana — Metoposaur Genesis Supreme — Petrified Forest — National Park Service, U.S. Department of the Interior —

On Blue Mesa Scenic Road 2.5 miles east of Petrified Forest Road, on the right when traveling east.

5 ► Arizona, Apache County, Adamana — Pioneers of Paleontology — Petrified Forest — National Park Service, U.S. Department of the Interior —

On Petrified Forest Road 1.6 miles north of Blue Mesa Scenic Road, on the right when traveling north.

6 ► Arizona, Apache County, Adamana — The Funky Worm —

On Blue Mesa Scenic Road 2.5 miles east of Petrified Forest Road, on the right when traveling north.

7 ► Arizona, Apache County, Adamana, Petrified Forest National Park — First Impressions — Petrified Forest — National Park Service, U.S. Department of the Interior —

On Jasper Forest Road.

8 ► Arizona, Apache County, Chambers — Painted Desert / Finding Fossils

On Park Road, on the right when traveling west. Reported missing.

9 ► Arizona, Apache County, Petrified Forest National Park — When Crystal Forest Was a Forest — Petrified Forest — National Park Service, U.S. Department of the Interior —

On Crystal Forest Trail.

10 ► Arizona, Coconino County, Page — Dinosaur Tracks —

Near U.S. 89.

11 ► Arizona, Coconino County, Page — Saurischia Dinosaur Tracks —

On Lake Powell Boulevard at Navajo Drive, on the right when traveling north on Lake Powell Boulevard.

12 ► Arizona, Navajo County, Holbrook — Agate Bridge —

On Petrified Forest Road, on the right when traveling north.

13 ► Arizona, Navajo County, Holbrook — An Ice Age Encampment at Rainbow Forest —

On Petrified Forest Road.

14 ► Arizona, Navajo County, Shonto — Canyons in Time — Navajo National Monument —

On Arizona Route 564.

15 ► Arizona, Navajo County, Shonto — Dinosaur Footprint — Navajo National Monument —

On Arizona Route 564.

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16 ► Arizona, Navajo County, Shonto — Sweathouse — Navajo National Monument —

On Arizona Route 564.

17 ► Arizona, Navajo County, Shonto — Upside-down Mountain — Navajo National Monument —

On Arizona Route 564.

18 ► Arkansas, Conway County, Winrock — Two Dominant Fossils of the Area —

Near Petit Jean Mountain Road.

19 ► California, Alameda County, Fremont, Cameron Hills — East View —

On Quema Drive at Paseo Padre Parkway, on the right when traveling east on Quema Drive.

20 ► California, Alameda County, Fremont, Cameron Hills — In Search of Fossils —

Near Via Orinda near Castillejo Way.

21 ► California, Alameda County, Fremont, Cameron Hills — Land Mammals of the Irvingtonian Age —

Near Via Orinda near Castillejo Way.

22 ► California, Alameda County, Fremont, Cameron Hills — Sabercat Historical Park — City of Fremont — Via Orinda Entrance —

On Via Orinda at Castillejo Way, on the right when traveling east on Via Orinda.

23 ► California, Alameda County, Fremont, Cameron Hills — West View —

On Quema Drive near Paseo Padre Parkway, on the right when traveling east.

24 ► California, Alameda County, Fremont, Mission San Jose District — Sabercat Historical Park — Paseo Padre Entrance — City of Fremont —

Near Paseo Padre parkway at Quema Drive.

25 ► California, Alameda County, Fremont, Old Mission San Jose District — Sabercat Historical Park — Pine Street Entrance — City of Fremont —

On Pine Street east of Excelso Drive, on the right when traveling west.

26 ► California, Contra Costa County, Danville — Turritella Snail Bed — Fossil Snails Tell Their Story in These Rocks —

Near Wall Point Road, on the left when traveling south.

27 ► California, Contra Costa County, El Cerrito — El Cerrito Hills —

On San Pablo Avenue at Carlson Boulevard, on the left when traveling north on San Pablo Avenue.

28 ► California, Contra Costa County, Walnut Creek — Blackhawk Ranch Quarry — A Paleontological Treasure —

On Southgate Road, on the left when traveling south.

29 ► California, Humboldt County, Orick — Big Diamond — A Circus Elephant — Not a Humboldt Mastodon —

Near Redwood Highway (State Highway 101) at Hufford Road, on the right when traveling south.

30 ► California, Kern County, McKittrick — 498 — McKittrick Brea Pit —

On State Highway 58 at State Highway 33, on the left when traveling west on State Highway 58.

31 ► California, Los Angeles County, Arcadia — Cycads — Jurassic Period — 200 Million Years Ago —

Near Baldwin Avenue 0.3 miles south of Colorado Boulevard, on the right when traveling south.

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32 ► California, Los Angeles County, Los Angeles, Miracle Mile — 1,000 Feet Above an Underground Oil Field — La Brea Tar Pits —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

33 ► California, Los Angeles County, Los Angeles, Miracle Mile — Chester Stock Ph.D. — Observation Pit — La Brea Tar Pits —

Near Wilshire Boulevard west of South Curson Street.

34 ► California, Los Angeles County, Los Angeles, Miracle Mile — Death Trap for Meat-Eaters — La Brea Tar Pits —

Near Wilshire Boulevard east of Fairfax Avenue, on the left when traveling east.

35 ► California, Los Angeles County, Los Angeles, Miracle Mile — Death Trap for Meat-Eaters —

Near West 6th Street, on the right when traveling east.

36 ► California, Los Angeles County, Los Angeles, Miracle Mile — Different Types of Fossils — La Brea Tar Pits —

Near Wilshire Boulevard east of Fairfax Avenue, on the left when traveling east.

37 ► California, Los Angeles County, Los Angeles, Miracle Mile — How Did 27 Columbian Mammoths Fit in This Small Pit? —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

38 ► California, Los Angeles County, Los Angeles, Miracle Mile — Imagining Ice Age L.A. — La Brea Tar Pits —

On Wilshire Boulevard at Curson Avenue, on the right when traveling west on Wilshire Boulevard.

39 ► California, Los Angeles County, Los Angeles, Miracle Mile — La Brea Tar Pits — Lake Pit —

On Wilshire Boulevard at Curson Avenue, on the right when traveling west on Wilshire Boulevard.

40 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pit 13 — La Brea Tar Pits —

Near West 6th Street, on the right when traveling east.

41 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pit 13 — La Brea Tar Pits —

Near West 6th Street, on the right when traveling east.

42 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pit 9 — La Brea Tar Pits —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

43 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pit 9 — La Brea Tar Pits —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

44 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pit 91 — La Brea Tar Pits —

Near Wilshire Boulevard east of Fairfax Avenue, on the left when traveling east.

45 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pits 3, 4, 61/67 — These Three Tar Pits Are Ages Apart — La Brea Tar Pits —

Near Wilshire Boulevard east of Fairfax Avenue, on the left when traveling east.

46 ► California, Los Angeles County, Los Angeles, Miracle Mile — Pits 3, 4, 61/67 — La Brea Tar Pits —

Near Wilshire Boulevard east of Fairfax Avenue, on the left when traveling east.

47 ► California, Los Angeles County, Los Angeles, Miracle Mile — Project 23 — Millions of New Fossils Found — La Brea Tar Pits —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

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48 ► California, Los Angeles County, Los Angeles, Miracle Mile — Project 23: Who, What, Why, Where, and How? —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

49 ► California, Los Angeles County, Los Angeles, Miracle Mile — Rancho La Brea — National Natural Landmark —

Near Wilshire Boulevard, on the left when traveling east.

50 ► California, Los Angeles County, Los Angeles, Miracle Mile — Tar seeps form Ice Age time capsules —

Near Wilshire Boulevard east of Fairfax Avenue, on the left when traveling east.

51 ► California, Los Angeles County, Los Angeles, Miracle Mile — What's in the crates? —

Near 6th Street east of Fairfax Avenue, on the right when traveling east.

52 ► California, Los Angeles County, Los Angeles, Miracle Mile — When Mammoths Walked on Wilshire —

Near Wilshire Boulevard at Curson Avenue, on the left when traveling north.

53 ► California, Los Angeles County, Los Angeles, West Los Angeles — 522 — Tongva Springs — Serra Springs — Wounded Deer Springs —

Near Barrington Boulevard 0.3 miles south of Wilshire Boulevard, on the right when traveling south.

54 ► California, Los Angeles County, Pearblossom — The Devil's Punchbowl — Department of Parks & Recreation, County of Los Angeles —

Near County Route N6 8 miles south of Pearblossom Highway.

55 ► California, Napa County, Calistoga, The Petrified Forest Park — Robert Louis Stevenson Tree —

Near Petrified Forest Road east of Porter Creek Road, on the right when traveling west.

56 ► California, Orange County, Aliso Viejo — Mixocetus Baleen Whale — Plaza de La Paz

Near Plaza De La Paz west of La Paz Road. Reported unreadable.

57 ► California, Orange County, Laguna Hills — Costeau Pit —

Near Costeau Street, on the left.

58 ► California, Orange County, Laguna Hills — 28 — Fossil Reef —

On Via Lomas, on the left when traveling east.

59 ► California, Orange County, Laguna Niguel — Plaza de La Paz —

Near La Paz Road at Plaza de La Paz, on the right when traveling south.

60 ► California, Orange County, Laguna Niguel — The City Seal: Pre-Historic Past —

On Crown Valley Parkway.

61 ► California, Orange County, Mission Viejo — Fossil — Whale Exhibit —

On Christiana Road, on the right when traveling north.

62 ► California, Orange County, Mission Viejo — Oso Creek Trail —

On Veterans Way.

63 ► California, Orange County, Mission Viejo — Whale Fossil —

On Christiana Road, on the right when traveling north.

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64 ► California, Orange County, Rancho Mission Viejo — Topanga Formation —

On Ribera just west of Ascenso Avenue, on the right when traveling east.

65 ► California, San Bernardino County, Baker — A Lost Lake —

On Zzyzx Road 5 miles south of Interstate 15, on the left when traveling south.

66 ► California, San Francisco City and County, San Francisco, Embarcadero — 20,000 Years Ago —

Near The Embarcadero near Folsom Street, on the right when traveling west.

67 ► California, San Mateo County, Redwood City — Pleistocene Period — 2.6 Million - 11,700 Years Ago — Stanford | Redwood City —

On Broadway near Warrington Avenue, on the left when traveling west.

68 ► California, Sonoma County, Calistoga — 915 — Petrified Forest —

Near Petrified Forest Road near Porter Creek Road, on the left when traveling east.

69 ► California, Sonoma County, Calistoga — 915 — Petrified Forest —

Near Petrified Forest Road 0.7 miles east of Porter Creek & Calistoga Roads.

70 ► California, Sonoma County, Calistoga — To Commemorate..."Petrified Charlie" —

Near Petrified Forest Road near Porter Creek Road, on the left when traveling east.

71 ► Colorado, Bent County, Hasty — Santa Fe Trail — Travelers through Time —

Near County Highway HH near County Highway 24.

72 ► Colorado, El Paso County, United States Air Force Academy — An Ancient Geologic Past — United States Air Force Academy —

Near Academy Drive.

73 ► Colorado, Fremont County, Cañon City — The Cleveland-Delfs Quarry — Garden Park Fossil Area —

On Garden Park Road (County Road 9) 3.1 miles Field Avenue, on the right when traveling north.

74 ► Colorado, Fremont County, Cañon City — The Morrison Formation — Garden Park Fossil Area —

On Garden Park Road (County Road 9) 3.1 miles north of Field Avenue, on the right when traveling north.

75 ► Colorado, Fremont County, Cañon City — Where Have The Fossils Gone? — Garden Park Fossil Area —

On Garden Park Road (County Road 9) 3.1 miles north of Field Avenue, on the right when traveling north.

76 ► Colorado, Gunnison County, Gunnison — If You Only Knew —

On U.S. 50, on the right when traveling west.

77 ► Colorado, Jefferson County, Golden — Bone Deposition —

Near West Alameda Parkway.

78 ► Colorado, Jefferson County, Golden — Brontosaur Bulges —

Near Hog Back Road.

79 ► Colorado, Jefferson County, Golden — Cretaceous Time —

Near County Road 93.

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80 ► Colorado, Jefferson County, Golden — Theropod Track —

Near West Alameda Parkway.

81 ► Colorado, Jefferson County, Golden — Triceratops Trail —

On 6th Avenue (U.S. 6) 0.5 miles south of 19th Street, on the right when traveling north.

82 ► Colorado, Jefferson County, Golden, Lakota Hills — Bird Track —

Near Triceratops Trail 0.5 miles 19th Street (U.S. 6).

83 ► Colorado, Jefferson County, Golden, Lakota Hills — Palm Fronds —

Near Triceratops Trail 0.5 miles 19th Street (U.S. 6).

84 ► Colorado, Jefferson County, Golden, Lakota Hills — Triceratops Tracks —

Near Triceratops Trail 0.5 miles 19th Street (U.S. 6).

85 ► Colorado, Jefferson County, Morrison — Dinosaur Ridge — Designated as part of the Dakota Hogback Natural Area —

Near West Alameda Parkway 0.1 miles west of Colorado Highway 470, on the right when traveling west.

86 ► Colorado, Jefferson County, Morrison — Front Range Foothills —

Near Plains View Road.

87 ► Colorado, Jefferson County, Morrison — Morrison Fossil Area — National Natural Landmark —

On West Alameda Parkway 0.1 miles south of Hog Back Road (County Road 93), on the left when traveling south.

88 ► Colorado, Jefferson County, Morrison — West Alameda Parkway/Dinosaur Ridge — Works Progress Administration — 1937 —

On Hog Back Road (County Road 93) at West Alameda Parkway, on the right when traveling north on Hog Back Road.

89 ► Colorado, Jefferson County, Morrison — What is the Historical Significance of this Site? —

On West Alameda Parkway/Dinosaur Ridge 0.5 miles south of South Rooney Road (County Road 53), on the right when traveling south.

90 ► Colorado, Las Animas County, Kim — Life at Dinosaur Lake —

Near no nearby street.

91 ► Colorado, Las Animas County, Kim — The Largest Tracksite in North America —

Near no nearby street.

92 ► Colorado, Las Animas County, Kim — The Site from the Sky —

Near no nearby street.

93 ► Colorado, Mesa County, Colorado National Monument — The Shape of Independence —

Near Rimrock Drive.

94 ► Colorado, Mesa County, Fruita — Dinosaur Diamond — A Dual-State National Scenic Byway —

Near Colorado 340.

95 ► Colorado, Teller County, Florissant — Ancient Clones — Florissant Fossil Beds National Monument — National Park Service, U.S. Department of the Interior —

Near County Road 1.

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96 ► Colorado, Teller County, Florissant — Ancient Forest Diversity —

Near County Road 1.

97 ► Colorado, Teller County, Florissant — Changes Within Habitats —

Near Ponderosa Loop.

98 ► Colorado, Teller County, Florissant — Charlotte Hill — Early Citizen-Scientist —

Near County Route 1 south of County Route 421.

99 ► Colorado, Teller County, Florissant — Dawn of the Recent Past —

Near County Road 1.

100 ► Colorado, Teller County, Florissant — Delicate Impressions —

Near County Road 1.

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