Rock Identifier

Category

Sedimentary (Fossiliferous)

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

Learn about Sedimentary (Fossiliferous) in the encyclopedia

Fossiliferous Limestone

Fossiliferous Limestone

Shelly Limestone

Shelly Limestone

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Weathered limestone slab (Micritic limestone, primarily calcite (CaCO₃)) — sedimentary

Weathered limestone slab

Micritic limestone, primarily calcite (CaCO₃)

Iron-stained sandstone or weathered ironstone concretion (Quartz-rich sandstone, locally cemented by iron oxides (hematite/goethite); exact identification requires testing) — sedimentary

Iron-stained sandstone or weathered ironstone concretion

Quartz-rich sandstone, locally cemented by iron oxides (hematite/goethite); exact identification requires testing

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Calcium carbonate matrix with macrofossils (CaCO3)) — fossil

Fossiliferous Limestone

Calcium carbonate matrix with macrofossils (CaCO3)

Hag Stone (Holey Rock / Fossiliferous Limestone) (Limestone (CaCO3) with natural erosion / fossil cavities) — sedimentary

Hag Stone (Holey Rock / Fossiliferous Limestone)

Limestone (CaCO3) with natural erosion / fossil cavities

Fossiliferous Sandstone / Quartzite Pebble (Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)) — fossil

Fossiliferous Sandstone / Quartzite Pebble

Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)

Reddish sandstone (Quartz-rich sandstone (arenite), commonly iron-oxide stained) — sedimentary

Reddish sandstone

Quartz-rich sandstone (arenite), commonly iron-oxide stained

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (lithic wacke/arenite) (Clastic sedimentary rock (SiO2 + varied clasts)) — sedimentary

Sandstone (lithic wacke/arenite)

Clastic sedimentary rock (SiO2 + varied clasts)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Calcite-rich limestone fragment (Limestone, predominantly calcite (CaCO₃), possibly micritic or fossiliferous) — sedimentary

Calcite-rich limestone fragment

Limestone, predominantly calcite (CaCO₃), possibly micritic or fossiliferous

Weathered limestone (Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic) — sedimentary

Weathered limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic

Flint with Fossil (Silicon dioxide (SiO2) microcrystalline quartz with fossiliferous inclusions) — sedimentary

Flint with Fossil

Silicon dioxide (SiO2) microcrystalline quartz with fossiliferous inclusions

Weathered limestone or calcitic fossil/reef fragment (Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone) — sedimentary

Weathered limestone or calcitic fossil/reef fragment

Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone

Weathered fossiliferous limestone fragment, possibly fossil coral or shell material (Indeterminate carbonate fossil in calcitic limestone; likely composed mainly of calcite (CaCO₃), but species identification is not possible from this image alone) — fossil

Weathered fossiliferous limestone fragment, possibly fossil coral or shell material

Indeterminate carbonate fossil in calcitic limestone; likely composed mainly of calcite (CaCO₃), but species identification is not possible from this image alone

Worn River Pebble with Fossil Indentation (Sedimentary Rock with Fossil Infill) — sedimentary

Worn River Pebble with Fossil Indentation

Sedimentary Rock with Fossil Infill

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Calcium carbonate (CaCO3) matrix with fossil inclusions) — fossil

Fossiliferous Limestone

Calcium carbonate (CaCO3) matrix with fossil inclusions

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Trilobite Fossil in Limestone (Trilobita (Class), likely embedded in fossiliferous limestone (CaCO3)) — fossil

Trilobite Fossil in Limestone

Trilobita (Class), likely embedded in fossiliferous limestone (CaCO3)

Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Crushed Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Crushed Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Micrite/Chalky variety) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Micrite/Chalky variety)

Calcium Carbonate (CaCO3)

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

Crinoid Fossil in Limestone (Crinoidea (Phylum Echinodermata) in Calcite Matrix (CaCO3)) — fossil

Crinoid Fossil in Limestone

Crinoidea (Phylum Echinodermata) in Calcite Matrix (CaCO3)

Calamites Fossill (Lepidodendrales) (Calamites sp. (Family Calamitaceae)) — sedimentary

Calamites Fossill (Lepidodendrales)

Calamites sp. (Family Calamitaceae)

Limestone (Cliff Formation) (Limestone (predominantly CaCO3 as calcite)) — Sedimentary

Limestone (Cliff Formation)

Limestone (predominantly CaCO3 as calcite)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Crinoid stem) (CaCO3 (Calcium Carbonate) with Fossil Inclusions) — sedimentary

Fossiliferous Limestone (Crinoid stem)

CaCO3 (Calcium Carbonate) with Fossil Inclusions

Ammonite Fossil (Ammonoidea (primarily composed of Calcite, CaCO3)) — sedimentary

Ammonite Fossil

Ammonoidea (primarily composed of Calcite, CaCO3)

Weathered limestone or calcareous fossil fragment (Calcite-rich carbonate rock (CaCO₃), possibly fossiliferous limestone) — sedimentary

Weathered limestone or calcareous fossil fragment

Calcite-rich carbonate rock (CaCO₃), possibly fossiliferous limestone

Fossilized Shark Tooth (Elasmobranchii (various species, possibly Carcharias or Odontaspis)) — fossil

Fossilized Shark Tooth

Elasmobranchii (various species, possibly Carcharias or Odontaspis)

Fossiliferous Limestone (Gritstone/Marl) (CaCO3 (Calcium Carbonate) with Fossil Inclusions) — sedimentary

Fossiliferous Limestone (Gritstone/Marl)

CaCO3 (Calcium Carbonate) with Fossil Inclusions

Fossiliferous Limestone (Coral Fossil) (Scleractinian Coral in Calcium Carbonate (CaCO3)) — sedimentary

Fossiliferous Limestone (Coral Fossil)

Scleractinian Coral in Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Red Marble) (Bioclastic Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone (Red Marble)

Bioclastic Limestone (CaCO3)

Light-colored limestone (probable fossiliferous or micritic limestone) (Calcite-rich carbonate rock; predominantly CaCO₃ (calcite)) — sedimentary

Light-colored limestone (probable fossiliferous or micritic limestone)

Calcite-rich carbonate rock; predominantly CaCO₃ (calcite)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Limestone (CaCO3)) — sedimentary

Limestone

Limestone (CaCO3)

Calamites fossil (Calamites (extinct genus of arborescent horsetails)) — fossil

Calamites fossil

Calamites (extinct genus of arborescent horsetails)