Rock Identifier

Category

Sedimentary (Fossilized Organic Remain)

Browse sedimentary (fossilized organic remain) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Fossilized Organic Remain) in the encyclopedia

Sapropel

Petrified Wood

Bituminous Shale

Bituminous Shale

Amber

Black Shale

Conglomerate

Jet

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Oil Shale

Kambaba Jasper

Coal (Coal (Combustible sedimentary rock)) — sedimentary

Coal

Coal (Combustible sedimentary rock)

Sandstone (Arenite (SiO2 variety)) — sedimentary

Sandstone

Arenite (SiO2 variety)

Fossilized Coral (Petoskey Stone or similar) (Hexagonaria percarinata (Order: Rugosa)) — sedimentary

Fossilized Coral (Petoskey Stone or similar)

Hexagonaria percarinata (Order: Rugosa)

Fossilized Rugose Coral (Petoskey Stone precursor) (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary

Fossilized Rugose Coral (Petoskey Stone precursor)

Hexagonaria percarinata (Fossilized Rugose Coral)

Fossil gastropod shell (Fossilized marine gastropod; exact genus/species requires locality and examination) — fossil

Fossil gastropod shell

Fossilized marine gastropod; exact genus/species requires locality and examination

Red Shale (Lutite (primarily composed of Hydrous Aluminum Silicates with Hematite staining)) — sedimentary

Red Shale

Lutite (primarily composed of Hydrous Aluminum Silicates with Hematite staining)

Amber (Succinite (Formula: C10H16O)) — mineral

Amber

Succinite (Formula: C10H16O)

Belemnoit (Fossil) (Belemnoidea (Order), Rostrum / Guard) — sedimentary

Belemnoit (Fossil)

Belemnoidea (Order), Rostrum / Guard

Amber (Succinite (C10H16O)) — gemstone

Amber

Succinite (C10H16O)

Fossilized Wood (Petrified Wood) (Agatized wood (primarily SiO2)) — fossil

Fossilized Wood (Petrified Wood)

Agatized wood (primarily SiO2)

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

Ammonite Fossil

Ammonoidea (primarily composed of Calcite, CaCO3)

Chert / Flint (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline Quartz (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Coprolite (Fossilized feces (various taxa)) — sedimentary

Coprolite

Fossilized feces (various taxa)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Amber (Fossilized Tree Resin (Generic formula roughly C10H16O)) — mineral

Amber

Fossilized Tree Resin (Generic formula roughly C10H16O)

Fossilized Bone Chunk (likely Dinosaur or Large Mammal) (Permineralized Fossil Bone) — sedimentary

Fossilized Bone Chunk (likely Dinosaur or Large Mammal)

Permineralized Fossil Bone

Fossil Assortment and Geological Specimens (Various (including Ammonoidea)) — fossil

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Gastropod Fossil (Phylum Mollusca, Class Gastropoda (Calcium Carbonate, CaCO3)) — sedimentary

Gastropod Fossil

Phylum Mollusca, Class Gastropoda (Calcium Carbonate, CaCO3)

Seashell Fragment (Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite) — mineral

Seashell Fragment

Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite

Fossil Shell (Invertebrate fossil (Mollusca)) — fossil

Fossil Shell

Invertebrate fossil (Mollusca)

Fossilized Coral (Hexagonaria (Rugose and Tabulate coral fossils)) — fossil

Fossilized Coral

Hexagonaria (Rugose and Tabulate coral fossils)

Coal (Bituminous) (Sedimentary carbonaceous rock) — sedimentary

Coal (Bituminous)

Sedimentary carbonaceous rock

Sea Urchin Fossil (Echinoidea (test/fossil)) — fossil

Sea Urchin Fossil

Echinoidea (test/fossil)

Fossil Coral (Cnidaria fossil (often Calcium Carbonate / CaCO3)) — sedimentary

Fossil Coral

Cnidaria fossil (often Calcium Carbonate / CaCO3)

Fossilized Coral (Petoskey Stone / Favosites) (Hexagonaria percarinata / Favosites sp. (Calcite, CaCO3)) — fossil

Fossilized Coral (Petoskey Stone / Favosites)

Hexagonaria percarinata / Favosites sp. (Calcite, CaCO3)

Script Jasper (Cryptocrystalline Quartz (SiO2) with fossiliferous inclusions) — sedimentary

Script Jasper

Cryptocrystalline Quartz (SiO2) with fossiliferous inclusions

Fossilized Shell Impression / Siltstone Fossil (Bivalvia / Brachiopoda mold in Siltstone) — fossil

Fossilized Shell Impression / Siltstone Fossil

Bivalvia / Brachiopoda mold in Siltstone

Chert (specifically Flint or Dark Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Flint or Dark Chert)

Chert (SiO2)

Fossilized Brachiopod (Phylum Brachiopoda (General mineral composition: Calcite/CaCO₃ or Silica/SiO₂)) — sedimentary

Fossilized Brachiopod

Phylum Brachiopoda (General mineral composition: Calcite/CaCO₃ or Silica/SiO₂)

Fossilized Blastoid (Pentremites (Class Blastoidea)) — sedimentary

Fossilized Blastoid

Pentremites (Class Blastoidea)

Fossilized Brachiopod (Articulata (Class) / Brachiopoda (Phylum)) — sedimentary

Fossilized Brachiopod

Articulata (Class) / Brachiopoda (Phylum)

Fossilized Rugose Coral (Petoskey Stone type) (Hexagonaria percarinata (Order: Rugosa)) — sedimentary

Fossilized Rugose Coral (Petoskey Stone type)

Hexagonaria percarinata (Order: Rugosa)

Petoskey Stone (Hexagonaria percarinata) — sedimentary

Petoskey Stone

Hexagonaria percarinata

Banded River Rock with Quartz Vein (Siltstone/Greywacke with Quartz (SiO2)) — sedimentary

Banded River Rock with Quartz Vein

Siltstone/Greywacke with Quartz (SiO2)

Concretion (Sandstone) (Carbonate-cemented Sandstone Concretion) — sedimentary

Concretion (Sandstone)

Carbonate-cemented Sandstone Concretion

Fossiliferous Shale (with Vertebrate Bones) (Laminated Mudstone containing Fossilized Bone (Apatite)) — sedimentary

Fossiliferous Shale (with Vertebrate Bones)

Laminated Mudstone containing Fossilized Bone (Apatite)

Unakite Jasper (Unakite (Epidotized Granite)) — metamorphic

Unakite Jasper

Unakite (Epidotized Granite)

Limpets Shell / Fossil Specimen (Patellogastropoda (Class)) — fossil

Limpets Shell / Fossil Specimen

Patellogastropoda (Class)

Fossilized Brachiopod or Gastropod (Phylum Brachiopoda / Phylum Mollusca) — fossil

Fossilized Brachiopod or Gastropod

Phylum Brachiopoda / Phylum Mollusca

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone Pebble (Arenite (typically SiO2)) — sedimentary

Sandstone Pebble

Arenite (typically SiO2)