Rock Identifier

Category

Sedimentary (Fossil)

Browse sedimentary (fossil) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Fossil) in the encyclopedia

Fossil Opal

Fossiliferous Limestone

Fossiliferous Limestone

Bone Opal

Turritella Jasper

Turritella Agate

Turritella Agate

Amber

Petrified Wood

Diatomite

Guano

Conglomerate

Jet

Diatomaceous Earth

Sandstone Concretion (Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone Concretion

Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)

Ironstone (Limonite/Hematite) (Ferruginous sedimentary rock (Fe2O3·nH2O / Fe2O3)) — sedimentary

Ironstone (Limonite/Hematite)

Ferruginous sedimentary rock (Fe2O3·nH2O / Fe2O3)

Fossilized Coral (Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)) — fossil

Fossilized Coral

Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)

Horn Coral Fossil (Rugosa (Order Rugosa)) — fossil

Horn Coral Fossil

Rugosa (Order Rugosa)

Mammoth or Mastodon Tooth Fragment (Mammuthus / Mammut molar fragment) — fossil

Mammoth or Mastodon Tooth Fragment

Mammuthus / Mammut molar fragment

Fossilized Shark Tooth (Elasmobranchii tooth (commonly Otodus or Scapanorhynchus sp.)) — fossil

Fossilized Shark Tooth

Elasmobranchii tooth (commonly Otodus or Scapanorhynchus sp.)

Fossilized Rugose Coral (Horn Coral) (Order Rugosa) — fossil

Fossilized Rugose Coral (Horn Coral)

Order Rugosa

Petoskey Stone (Hexagonaria percarinata) — fossil

Petoskey Stone

Hexagonaria percarinata

Sandstone (likely Arkose or Lithic) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (likely Arkose or Lithic)

Clastic sedimentary rock (primarily SiO2)

Siltstone (Siltstone (composed of clastic quartz and feldspar grains)) — sedimentary

Siltstone

Siltstone (composed of clastic quartz and feldspar grains)

Weathered gray sandstone or siltstone (Clastic siliciclastic rock, primarily quartz and feldspar grains cemented by silica or carbonate) — sedimentary

Weathered gray sandstone or siltstone

Clastic siliciclastic rock, primarily quartz and feldspar grains cemented by silica or carbonate

Weathered sandstone or mudstone (Clastic siliciclastic sedimentary rock, probably quartz-rich sandstone; exact identification requires a fresh surface and tests) — sedimentary

Weathered sandstone or mudstone

Clastic siliciclastic sedimentary rock, probably quartz-rich sandstone; exact identification requires a fresh surface and tests

Weathered sandstone or iron-rich mudstone fragment (Clastic sedimentary rock, likely quartz–feldspar sandstone with iron-oxide cement) — sedimentary

Weathered sandstone or iron-rich mudstone fragment

Clastic sedimentary rock, likely quartz–feldspar sandstone with iron-oxide cement

Fossiliferous Limestone (Coquina / Shell Limestone) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Coquina (Biogenic Limestone (Calcium Carbonate - CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcium Carbonate - CaCO3)

Red Sandstone (Arenite (primarily Quartz with Iron Oxide)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Iron Oxide)

Sandstone (Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Petrified Wood (Silicified Wood (primarily SiO2 - Silicon Dioxide)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcite-rich Sedimentary Rock (CaCO3)) — sedimentary

Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Limestone (Sedimentary carbonate rock (CaCO3)) — sedimentary

Limestone

Sedimentary carbonate rock (CaCO3)

Shale (Lutaceous Rock (Sedimentary Mudrock)) — sedimentary

Shale

Lutaceous Rock (Sedimentary Mudrock)

Fossiliferous Limestone (Crinoidal Limestone) (Calcium Carbonate with Crinoid Stem Fossils (CaCO3)) — sedimentary

Fossiliferous Limestone (Crinoidal Limestone)

Calcium Carbonate with Crinoid Stem Fossils (CaCO3)

Tumbled limestone or marble fragment (Calcite (CaCO₃), likely marble; possibly compact limestone) — metamorphic

Tumbled limestone or marble fragment

Calcite (CaCO₃), likely marble; possibly compact limestone

Fossil tooth, possibly shark tooth (Indeterminate fossilized vertebrate tooth; likely a shark tooth (possibly *Carcharhinus* or related genus)) — fossil

Fossil tooth, possibly shark tooth

Indeterminate fossilized vertebrate tooth; likely a shark tooth (possibly *Carcharhinus* or related genus)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Sandstone (likely Fossiliferous Sandstone)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Ferruginous) (Arenite with Iron-Oxide Cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Limestone (Tufa/Travertine) (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Tufa/Travertine)

Sedimentary Calcium Carbonate (CaCO3)

Earth (Terra / Earth) — igneous, sedimentary, and metamorphic

Earth

Terra / Earth

igneous, sedimentary, and metamorphic

River Pebble (Siltstone/Mudstone) (Clastic sedimentary rock) — sedimentary

River Pebble (Siltstone/Mudstone)

Clastic sedimentary rock

Weathered sandstone or limestone fragment (Likely quartz-rich sandstone or micritic limestone; exact identification requires testing) — sedimentary

Weathered sandstone or limestone fragment

Likely quartz-rich sandstone or micritic limestone; exact identification requires testing

Fossiliferous Limestone (with Rugose Coral) (Limestone with Tetracoralla (Rugosa) fossil) — fossil

Fossiliferous Limestone (with Rugose Coral)

Limestone with Tetracoralla (Rugosa) fossil

Siltstone Pebble (Siltstone (composed of siliciclastic grains)) — sedimentary

Siltstone Pebble

Siltstone (composed of siliciclastic grains)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Concretion (Septarian concretion (likely containing Calcite or Siderite)) — sedimentary

Concretion

Septarian concretion (likely containing Calcite or Siderite)

Laterite (Laterite (Ferricrete)) — sedimentary

Laterite

Laterite (Ferricrete)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chalk (Calcitic) (Calcium Carbonate (CaCO3) - Biogenic Sedimentary Rock) — sedimentary

Chalk (Calcitic)

Calcium Carbonate (CaCO3) - Biogenic Sedimentary Rock

Limestone (Limestone (CaCO3)) — sedimentary

Limestone

Limestone (CaCO3)