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

Amber

Turritella Agate

Turritella Agate

Petrified Wood

Diatomite

Guano

Conglomerate

Jet

Diatomaceous Earth

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Shale (Clastic sedimentary rock (primarily clay and silt minerals)) — sedimentary

Shale

Clastic sedimentary rock (primarily clay and silt minerals)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Polished fossil shell fragment (Fossilized bivalve or gastropod shell, likely calcitic/aragonitic carbonate) — fossil

Polished fossil shell fragment

Fossilized bivalve or gastropod shell, likely calcitic/aragonitic carbonate

Fossil bone or tooth fragment (Indeterminate fossilized vertebrate bone/tooth; taxonomic identification is not possible from this blurred image) — fossil

Fossil bone or tooth fragment

Indeterminate fossilized vertebrate bone/tooth; taxonomic identification is not possible from this blurred image

Petrified Wood (Silicified Wood (primarily Chalcedony or Quartz, SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily Chalcedony or Quartz, SiO2)

Sandstone (Quartzite-rich Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone Concretion (Sedimentary Concretion (Quartz sand bound by mineral cement)) — sedimentary

Sandstone Concretion

Sedimentary Concretion (Quartz sand bound by mineral cement)

Limestone (Calcium carbonate (CaCO3)) — sedimentary

Limestone

Calcium carbonate (CaCO3)

Fossil bivalve shell (Fossilized mollusk (Bivalvia), likely oyster or related species; exact genus requires locality and preparation) — fossil

Fossil bivalve shell

Fossilized mollusk (Bivalvia), likely oyster or related species; exact genus requires locality and preparation

Limestone with Fossil Inclusion (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Fossil Inclusion

Sedimentary Calcium Carbonate (CaCO3)

Fenestella Bryozoan Fossil (Fenestella (class Stenolaemata)) — fossil

Fenestella Bryozoan Fossil

Fenestella (class Stenolaemata)

Petrified Wood (Silicified Wood) — fossil

Petrified Wood

Silicified Wood

Fossiliferous limestone (Bioclastic carbonate rock; predominantly calcite (CaCO₃)) — sedimentary

Fossiliferous limestone

Bioclastic carbonate rock; predominantly calcite (CaCO₃)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Weathered limestone or calcitic marble (Calcite-rich carbonate rock, chiefly CaCO₃; likely fossiliferous limestone, possibly weakly metamorphosed marble) — metamorphic

Weathered limestone or calcitic marble

Calcite-rich carbonate rock, chiefly CaCO₃; likely fossiliferous limestone, possibly weakly metamorphosed marble

Sand Dollar Fossil (Echinoidea) (Class Echinoidea (likely order Clypeasteroida), CaCO3 (Calcite)) — sedimentary

Sand Dollar Fossil (Echinoidea)

Class Echinoidea (likely order Clypeasteroida), CaCO3 (Calcite)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (lithic/quartz variant) (Clastic sedimentary rock (SiO2 predominant)) — sedimentary

Sandstone (lithic/quartz variant)

Clastic sedimentary rock (SiO2 predominant)

Sandstone (Arenite (SiO2 based typically)) — sedimentary

Sandstone

Arenite (SiO2 based typically)

Limestone (Calcium carbonate (CaCO3)) — sedimentary

Limestone

Calcium carbonate (CaCO3)

Fossiliferous Limestone (Limestone (Calcium Carbonate) with Fossil Inclusions) — sedimentary

Fossiliferous Limestone

Limestone (Calcium Carbonate) with Fossil Inclusions

Fossiliferous limestone (Bioclastic limestone, primarily calcite (CaCO₃), containing marine shell or coral fossils) — fossil

Fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃), containing marine shell or coral fossils

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Fossilized tooth or jaw fragment (likely fish or reptile) (Indeterminate vertebrate bone/tooth; mineralized hydroxyapatite, commonly Ca₅(PO₄)₃(OH)) — fossil

Fossilized tooth or jaw fragment (likely fish or reptile)

Indeterminate vertebrate bone/tooth; mineralized hydroxyapatite, commonly Ca₅(PO₄)₃(OH)

Possible fossilized bone or tooth fragment (Indeterminate fossilized vertebrate material; mineralized hydroxyapatite replaced or coated by silica/carbonate) — fossil

Possible fossilized bone or tooth fragment

Indeterminate fossilized vertebrate material; mineralized hydroxyapatite replaced or coated by silica/carbonate

Sandstone (Quartzite-leaning) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzite-leaning)

Arenite (primarily SiO2)

Fossilized vertebra, likely mammalian (Mineralized vertebral centrum and neural arch; exact taxon indeterminate from the image) — fossil

Fossilized vertebra, likely mammalian

Mineralized vertebral centrum and neural arch; exact taxon indeterminate from the image

Sandstone (Arenite (primarily SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Sandstone (Ferruginous) (Arenite (SiO2 with Fe2O3 inclusions)) — sedimentary

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

Sandstone (Arenite (primary component SiO2)) — sedimentary

Sandstone

Arenite (primary component SiO2)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

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

Sandstone

Arenite (primarily Quartz, SiO2)

Sandstone (likely Quartzose Sandstone) (Arenite) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Ferruginous) (Ferruginous Sandstone (SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with iron oxide cement)

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

Fossiliferous limestone

Bioclastic limestone, predominantly calcite (CaCO₃)

Fossiliferous limestone (Bioclastic limestone, chiefly calcite (CaCO₃), containing shell or coral fragments) — fossil

Fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃), containing shell or coral fragments

Olive Sea Shell Fossil (Oliva sp. (Calcium Carbonate, CaCO3)) — fossil

Olive Sea Shell Fossil

Oliva sp. (Calcium Carbonate, CaCO3)

Fossilized Echinoid (Echinoidea (likely of the order Echinoidea)) — fossil

Fossilized Echinoid

Echinoidea (likely of the order Echinoidea)

Tumbled fossiliferous limestone (Fossiliferous micritic limestone, mainly calcite (CaCO₃)) — sedimentary

Tumbled fossiliferous limestone

Fossiliferous micritic limestone, mainly calcite (CaCO₃)

Megalodon Shark Tooth (Otodus megalodon) — fossil

Megalodon Shark Tooth

Otodus megalodon