Rock Identifier

Category

Fossil

Browse fossil specimens identified by the Rock Identifier community.

Learn about Fossil in the encyclopedia

Fossil Opal

Bone Opal

Turritella Jasper

Amber

Fossiliferous Limestone

Fossiliferous Limestone

Turritella Agate

Turritella Agate

Petrified Wood

Diatomite

Guano

Jet

Diatomaceous Earth

Opalized Wood

Fossiliferous limestone (Bioclastic calcarenite/calcirudite, chiefly calcium carbonate (CaCO₃)) — fossil

Fossiliferous limestone

Bioclastic calcarenite/calcirudite, chiefly calcium carbonate (CaCO₃)

Weathered sandstone pebble (Quartz-rich sandstone, commonly arkose or lithic sandstone) — sedimentary

Weathered sandstone pebble

Quartz-rich sandstone, commonly arkose or lithic sandstone

Limestone (Sedimentary Calcite (CaCO3)) — sedimentary

Limestone

Sedimentary Calcite (CaCO3)

Ironstone Concretion (Siderite or Hematite Concretion (FeCO3 or Fe2O3)) — sedimentary

Ironstone Concretion

Siderite or Hematite Concretion (FeCO3 or Fe2O3)

Fossiliferous conglomerate (Bioclastic, carbonate-cemented conglomerate (likely limestone matrix)) — sedimentary

Fossiliferous conglomerate

Bioclastic, carbonate-cemented conglomerate (likely limestone matrix)

Fossilized Coral in Chert (Anthozoa (Class) fossil in Cryptocrystalline Quartz (SiO2)) — fossil

Fossilized Coral in Chert

Anthozoa (Class) fossil in Cryptocrystalline Quartz (SiO2)

Fossiliferous Limestone (Crinoidal) (Crinoid Limestone (CaCO3 with fossil biological remains)) — sedimentary

Fossiliferous Limestone (Crinoidal)

Crinoid Limestone (CaCO3 with fossil biological remains)

Fossilized Shell in Limestone (Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock) — sedimentary

Fossilized Shell in Limestone

Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with Biogenic Inclusions) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Inclusions

Fossiliferous Limestone (Biogenic Sedimentary Rock (primarily CaCO3 with fossil fragments)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (primarily CaCO3 with fossil fragments)

Likely fossilized coral fragment (Rugose or tabulate coral fossil; exact taxon indeterminate) — fossil

Likely fossilized coral fragment

Rugose or tabulate coral fossil; exact taxon indeterminate

Fossiliferous Limestone (Biogenic Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Limestone (CaCO3)

Fossiliferous Limestone (Limestone (CaCO3 with Bioclasts)) — sedimentary

Fossiliferous Limestone

Limestone (CaCO3 with Bioclasts)

Fossiliferous Chert (with Fossil Shells) (Silicon Dioxide (SiO2) with biogenic inclusions) — sedimentary

Fossiliferous Chert (with Fossil Shells)

Silicon Dioxide (SiO2) with biogenic inclusions

Larimar and Fossil Coral (Pectolite (NaCa2Si3O8(OH)) and Hexagonaria/Petoskey Stone) — mineral and sedimentary

Larimar and Fossil Coral

Pectolite (NaCa2Si3O8(OH)) and Hexagonaria/Petoskey Stone

mineral and sedimentary

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous limestone (Bioclastic limestone, predominantly calcite (CaCO₃)) — sedimentary

Fossiliferous limestone

Bioclastic limestone, predominantly calcite (CaCO₃)

Fossilized Shark Tooth (Drum Fish Tooth/Pavement Tooth) (Sparidae or Sciaenidae (Crushing plate dental fossil)) — fossil

Fossilized Shark Tooth (Drum Fish Tooth/Pavement Tooth)

Sparidae or Sciaenidae (Crushing plate dental fossil)

Fossil Shark Tooth (Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)) — fossil

Fossil Shark Tooth

Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)

Fossil coral fragment (Likely calcitic colonial coral, possibly fossilized scleractinian coral) — fossil

Fossil coral fragment

Likely calcitic colonial coral, possibly fossilized scleractinian coral

Fossilized gastropod (snail) (Gastropoda indet.; likely a mineral-replaced or steinkern fossil) — fossil

Fossilized gastropod (snail)

Gastropoda indet.; likely a mineral-replaced or steinkern fossil

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Ferruginous) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Red) (Arenite (primarily SiO2 with Fe2O3)) — sedimentary

Sandstone (Red)

Arenite (primarily SiO2 with Fe2O3)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with iron oxide Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide Fe2O3 cement)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Chert (Nodule) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Cryptocrystalline Quartz (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Turritella Agate / Fossiliferous Limestone (Elimia tenera in Chalcedony/Calcite Matrix) — fossil

Turritella Agate / Fossiliferous Limestone

Elimia tenera in Chalcedony/Calcite Matrix

Limestone (Carved Statue) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Carved Statue)

Calcium Carbonate (CaCO3)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide cement)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (with Arkose characteristics) (Clastic sedimentary rock (SiO2 with KAlSi3O8)) — sedimentary

Sandstone (with Arkose characteristics)

Clastic sedimentary rock (SiO2 with KAlSi3O8)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (likely Quartzose Sandstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (composed primarily of SiO2)

Sandstone (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone

Arenite (primarily Quartz, SiO2)

Limestone with Secondary Mineralization (Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Secondary Mineralization

Calcium Carbonate (CaCO3)