Fossil Ammonites

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- Actinolite
- Adamite
- Agate
- Albite
- Altaite
- Amazonite
- Amber
- Amethyst
- Ametrine
- Ammonite
- Apatite
- Apophyllite
- Aquamarine
- Aragonite
- Aura Quartz
- Aurichalcite
- Austinite
- Aventurine
- Azurite
- Baker Geodes
- Barite
- Beryl
- Black Tourmaline (Schorl)
- Bloodstone
- Brochantite
- Brucite
- Calcite
- Carnelian
- Cassiterite
- Celestite
- Cerussite
- Chabazite
- Chalcedony
- Chalcopyrite
- Charoite
- Chiastolite
- Chrome Diopside
- Chrysocolla
- Citrine
- Columbite
- Conichalcite
- Copper
- Covellite
- Cuprite
- Danburite
- Descloisite
- Dinosaur Bone (fossil)
- Dioptase
- Dolomite
- Dumortierite
- Emerald
- Erythrite
- Epidote
- Feldspar
- Fluorite
- Fossil Coral
- Fossil Sand Dollar
- Fossil Sea Urchin
- Fossil Shells
- Fossil Shrimp
- Franklinite
- Fuchsite
- Fulgurite (Lechatelierite)
- Galena
- Garnet
- Geodes
- Goethite
- Gypsum
- Halite
- Hematite
- Hemimorphite
- Herkimer "diamond"
- Heulandite
- Holmquistite
- Iolite
- Jade, Nephrite, and Jadeite
- Jasper
- Jet
- Kyanite
- Labradorite
- Lapis Lazuli
- Larimar
- Lemurian quartz
- Lepidolite
- Libyan Desert Glass
- Linarite
- Lithium Quartz
- Magnetite
- Malachite
- Mesolite
- Meteorite
- Microcline
- Mimetite
- Moldavite
- Moonstone
- Moqui Balls
- Mordenite
- Morganite
- Mottramite
- Muscovite
- Obsidian
- Olivine
- Onyx
- Opal
- Orpiment
- Orthoclase
- Pearl
- Peridot
- Petrified Wood (fossil)
- Phlogopite
- Piemontite
- Pietersite
- Pinolith
- Planerite
- Prasiolite
- Prehnite
- Pyrite
- Quartz
- Rhodochrocite
- Rhodonite
- Ricardite
- Rosasite
- Rose Quartz
- Ruby
- Ruby in Zoisite (Anyolite)
- Sapphire
- Scolecite
- Schorl (Black Tourmaline)
- Selenite
- Seraphinite
- Serpentine
- Shiva Lingham
- Shungite
- Smithsonite
- Smoky Quartz
- Sodalite
- Sphalerite
- Spinel
- Staurolite
- Stibnite
- Stichtite
- Stilbite
- Stromatolite (fossil)
- Sturmanite
- Sunstone
- Super 7
- Tanzanite
- Thulite
- Tiffany Stone
- Tigers Eye
- Trilobite (fossil)
- Topaz
- Tourmaline
- Turquoise
- Unakite
- Vanadinite
- Variscite
- Vesuvianite
- Volborthite
- Wavellite
- Wulfenite
- Yooperlite
- Zeolites
- Zoisite
- Uralite
Ammonites are a now-extinct variety of the group cephalopoda that includes modern-day nautiluses and octopuses. They lived from about 450 million years ago to 66 million years ago, becoming extinct at the end of the Cretaceous Period (along with dinosaurs and other groups). Their fossil shells consist of calcite, silica or (rarely) pyrite.
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- Minerals & Fossils by Country
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- Discover
- New Mexico Geology
- The Geo-Nerd News
- The Taos Rockers Newsletter
- Birthstones
- Geologic Time Scale
- Mohs Scale of Mineral Hardness
- Chakras
- Southwest Gem/ Mineral/ Rock Clubs
- Taos Rockers' Gem Safari
- Size Chart
- About
- Actinolite
- Adamite
- Agate
- Albite
- Altaite
- Amazonite
- Amber
- Amethyst
- Ametrine
- Ammonite
- Apatite
- Apophyllite
- Aquamarine
- Aragonite
- Aura Quartz
- Aurichalcite
- Austinite
- Aventurine
- Azurite
- Baker Geodes
- Barite
- Beryl
- Black Tourmaline (Schorl)
- Bloodstone
- Brochantite
- Brucite
- Calcite
- Carnelian
- Cassiterite
- Celestite
- Cerussite
- Chabazite
- Chalcedony
- Chalcopyrite
- Charoite
- Chiastolite
- Chrome Diopside
- Chrysocolla
- Citrine
- Columbite
- Conichalcite
- Copper
- Covellite
- Cuprite
- Danburite
- Descloisite
- Dinosaur Bone (fossil)
- Dioptase
- Dolomite
- Dumortierite
- Emerald
- Erythrite
- Epidote
- Feldspar
- Fluorite
- Fossil Coral
- Fossil Sand Dollar
- Fossil Sea Urchin
- Fossil Shells
- Fossil Shrimp
- Franklinite
- Fuchsite
- Fulgurite (Lechatelierite)
- Galena
- Garnet
- Geodes
- Goethite
- Gypsum
- Halite
- Hematite
- Hemimorphite
- Herkimer "diamond"
- Heulandite
- Holmquistite
- Iolite
- Jade, Nephrite, and Jadeite
- Jasper
- Jet
- Kyanite
- Labradorite
- Lapis Lazuli
- Larimar
- Lemurian quartz
- Lepidolite
- Libyan Desert Glass
- Linarite
- Lithium Quartz
- Magnetite
- Malachite
- Mesolite
- Meteorite
- Microcline
- Mimetite
- Moldavite
- Moonstone
- Moqui Balls
- Mordenite
- Morganite
- Mottramite
- Muscovite
- Obsidian
- Olivine
- Onyx
- Opal
- Orpiment
- Orthoclase
- Pearl
- Peridot
- Petrified Wood (fossil)
- Phlogopite
- Piemontite
- Pietersite
- Pinolith
- Planerite
- Prasiolite
- Prehnite
- Pyrite
- Quartz
- Rhodochrocite
- Rhodonite
- Ricardite
- Rosasite
- Rose Quartz
- Ruby
- Ruby in Zoisite (Anyolite)
- Sapphire
- Scolecite
- Schorl (Black Tourmaline)
- Selenite
- Seraphinite
- Serpentine
- Shiva Lingham
- Shungite
- Smithsonite
- Smoky Quartz
- Sodalite
- Sphalerite
- Spinel
- Staurolite
- Stibnite
- Stichtite
- Stilbite
- Stromatolite (fossil)
- Sturmanite
- Sunstone
- Super 7
- Tanzanite
- Thulite
- Tiffany Stone
- Tigers Eye
- Trilobite (fossil)
- Topaz
- Tourmaline
- Turquoise
- Unakite
- Vanadinite
- Variscite
- Vesuvianite
- Volborthite
- Wavellite
- Wulfenite
- Yooperlite
- Zeolites
- Zoisite
- Uralite
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- Shop
- New
- New Mexico Minerals
- Minerals
- Fossils
- Metaphysical Shop
- Jewelry
- For the Home
- Sale
- Sets & Kits
- Gift Certificates
- Minerals & Fossils
- Shop Minerals & Fossils
- Mineral & Fossil Info
- Minerals & Fossils by State (USA)
- Minerals & Fossils by Country
- About Fossils
- Discover
- New Mexico Geology
- The Geo-Nerd News
- The Taos Rockers Newsletter
- Birthstones
- Geologic Time Scale
- Mohs Scale of Mineral Hardness
- Chakras
- Southwest Gem/ Mineral/ Rock Clubs
- Taos Rockers' Gem Safari
- Size Chart
- About
- Actinolite
- Adamite
- Agate
- Albite
- Altaite
- Amazonite
- Amber
- Amethyst
- Ametrine
- Ammonite
- Apatite
- Apophyllite
- Aquamarine
- Aragonite
- Aura Quartz
- Aurichalcite
- Austinite
- Aventurine
- Azurite
- Baker Geodes
- Barite
- Beryl
- Black Tourmaline (Schorl)
- Bloodstone
- Brochantite
- Brucite
- Calcite
- Carnelian
- Cassiterite
- Celestite
- Cerussite
- Chabazite
- Chalcedony
- Chalcopyrite
- Charoite
- Chiastolite
- Chrome Diopside
- Chrysocolla
- Citrine
- Columbite
- Conichalcite
- Copper
- Covellite
- Cuprite
- Danburite
- Descloisite
- Dinosaur Bone (fossil)
- Dioptase
- Dolomite
- Dumortierite
- Emerald
- Erythrite
- Epidote
- Feldspar
- Fluorite
- Fossil Coral
- Fossil Sand Dollar
- Fossil Sea Urchin
- Fossil Shells
- Fossil Shrimp
- Franklinite
- Fuchsite
- Fulgurite (Lechatelierite)
- Galena
- Garnet
- Geodes
- Goethite
- Gypsum
- Halite
- Hematite
- Hemimorphite
- Herkimer "diamond"
- Heulandite
- Holmquistite
- Iolite
- Jade, Nephrite, and Jadeite
- Jasper
- Jet
- Kyanite
- Labradorite
- Lapis Lazuli
- Larimar
- Lemurian quartz
- Lepidolite
- Libyan Desert Glass
- Linarite
- Lithium Quartz
- Magnetite
- Malachite
- Mesolite
- Meteorite
- Microcline
- Mimetite
- Moldavite
- Moonstone
- Moqui Balls
- Mordenite
- Morganite
- Mottramite
- Muscovite
- Obsidian
- Olivine
- Onyx
- Opal
- Orpiment
- Orthoclase
- Pearl
- Peridot
- Petrified Wood (fossil)
- Phlogopite
- Piemontite
- Pietersite
- Pinolith
- Planerite
- Prasiolite
- Prehnite
- Pyrite
- Quartz
- Rhodochrocite
- Rhodonite
- Ricardite
- Rosasite
- Rose Quartz
- Ruby
- Ruby in Zoisite (Anyolite)
- Sapphire
- Scolecite
- Schorl (Black Tourmaline)
- Selenite
- Seraphinite
- Serpentine
- Shiva Lingham
- Shungite
- Smithsonite
- Smoky Quartz
- Sodalite
- Sphalerite
- Spinel
- Staurolite
- Stibnite
- Stichtite
- Stilbite
- Stromatolite (fossil)
- Sturmanite
- Sunstone
- Super 7
- Tanzanite
- Thulite
- Tiffany Stone
- Tigers Eye
- Trilobite (fossil)
- Topaz
- Tourmaline
- Turquoise
- Unakite
- Vanadinite
- Variscite
- Vesuvianite
- Volborthite
- Wavellite
- Wulfenite
- Yooperlite
- Zeolites
- Zoisite
- Uralite
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