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 (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Coarse Sandstone (Arenite (SiO2 based)) — sedimentary

Coarse Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 dominant)) — sedimentary

Sandstone

Arenite (SiO2 dominant)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Fossilized Oyster Shell (Ostreidae (Calcium Carbonate - CaCO3)) — fossil

Fossilized Oyster Shell

Ostreidae (Calcium Carbonate - CaCO3)

Crinoid Fossil (Crinoidea (Echinodermata)) — fossil

Crinoid Fossil

Crinoidea (Echinodermata)

Fossilized Blastoid (Sea Bud) (Pentremites sp. (Echinodermata, Blastoidea)) — fossil

Fossilized Blastoid (Sea Bud)

Pentremites sp. (Echinodermata, Blastoidea)

Chert Cobble with Crinoid Fossil (Silica (SiO2) with Crinoid ossicle) — sedimentary

Chert Cobble with Crinoid Fossil

Silica (SiO2) with Crinoid ossicle

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

Fossilized Shell in Limestone

Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock

Fossilized Shark Tooth (Selachimorpha fossil (varies by species)) — fossil

Fossilized Shark Tooth

Selachimorpha fossil (varies by species)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Fossil Coral (Scleractinia (Fossilized Hexacoral)) — fossil

Fossil Coral

Scleractinia (Fossilized Hexacoral)

Fossil Coral (Cnidaria Anthozoa (Fossilized)) — sedimentary

Fossil Coral

Cnidaria Anthozoa (Fossilized)

Fossil Coral (Scleractinia (Stony Coral) fossil) — fossil

Fossil Coral

Scleractinia (Stony Coral) fossil

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

Fossiliferous limestone

Bioclastic limestone, predominantly calcite (CaCO₃)

Mosasaur Tooth (Mosasaurus sp.) — fossil

Mosasaur Tooth

Mosasaurus sp.

Fossil Brachiopod (Phylum Brachiopoda) — fossil

Fossil Brachiopod

Phylum Brachiopoda

Fossilized Limestone with Crinoid Stem (Carboniferous Limestone (containing Crinoidea ossicles)) — fossil

Fossilized Limestone with Crinoid Stem

Carboniferous Limestone (containing Crinoidea ossicles)

Ironstone Concretion (Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Sandstone Pebbles (Arenite) — sedimentary

Sandstone Pebbles

Arenite

Crinoid Stem Fossil (Crinoid columnal (Echinodermata)) — fossil

Crinoid Stem Fossil

Crinoid columnal (Echinodermata)

Fossilized Shell Fragment (Bivalvia or Gastropoda (Class) fragment) — fossil

Fossilized Shell Fragment

Bivalvia or Gastropoda (Class) fragment

Coal (Bituminous Coal / Anthracite) — sedimentary

Coal

Bituminous Coal / Anthracite

Fossil Shell Fragment (possibly Brachiopod or Bivalve) (Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca) — sedimentary

Fossil Shell Fragment (possibly Brachiopod or Bivalve)

Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca

Fossilized Sea Urchin (Echinoid) (Echinoidea (Class) - likely replaced by Calcite or Quartz) — sedimentary

Fossilized Sea Urchin (Echinoid)

Echinoidea (Class) - likely replaced by Calcite or Quartz

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

Ammonite Fossil

Ammonoidea (primarily composed of Calcite, CaCO3)

Belemnite Fossil (Belemnitida (Order within Cephalopoda)) — sedimentary

Belemnite Fossil

Belemnitida (Order within Cephalopoda)

Fossil Coral (Rugosa or Tabulata / Hexacorallia (replaced with silica or calcite)) — fossil

Fossil Coral

Rugosa or Tabulata / Hexacorallia (replaced with silica or calcite)

Fossiliferous Limestone (Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Sand Dollar Fossil (Echinoidea (Clypeasteroida)) — sedimentary

Sand Dollar Fossil

Echinoidea (Clypeasteroida)

Fossiliferous limestone (Bioclastic limestone, composed mainly of calcite (CaCO₃)) — sedimentary

Fossiliferous limestone

Bioclastic limestone, composed mainly of calcite (CaCO₃)

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Fossilized Oyster Shell (Gryphaea or Exogyra (Family Ostreidae)) — fossil

Fossilized Oyster Shell

Gryphaea or Exogyra (Family Ostreidae)

Fossilized Shell Fragment (Bivalvia or Gastropoda (depending on original organism)) — fossil

Fossilized Shell Fragment

Bivalvia or Gastropoda (depending on original organism)

Rugose Coral Fossil (Horn Coral) (Order Rugosa (common genera include Zaphrentis or Heliophyllum)) — sedimentary

Rugose Coral Fossil (Horn Coral)

Order Rugosa (common genera include Zaphrentis or Heliophyllum)

Bivalve Fossil (Internal Mold/Steinkern) (Class Bivalvia (Fossilized Mold)) — sedimentary

Bivalve Fossil (Internal Mold/Steinkern)

Class Bivalvia (Fossilized Mold)

Spinosaurus Tooth (Spinosaurus aegyptiacus (fossilized in Hydroxyapatite)) — sedimentary

Spinosaurus Tooth

Spinosaurus aegyptiacus (fossilized in Hydroxyapatite)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Shale (Shale (clastic sedimentary rock composed of silt and clay-sized particles)) — sedimentary

Shale

Shale (clastic sedimentary rock composed of silt and clay-sized particles)