Rock Identifier

Category

Sedimentary (Fossilized Organic Matter)

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

Learn about Sedimentary (Fossilized Organic Matter) in the encyclopedia

Sapropel

Petrified Wood

Amber

Bituminous Shale

Bituminous Shale

Oil Shale

Matte Obsidian

Black Shale

Conglomerate

Jet

Peat

Quartzite Sandstone

Quartzite Sandstone

Breccia

Petrified Wood (Silicified Wood (primarily Quartz/Chalcedony, SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, SiO2)

Shark Tooth Fossil (Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)) — fossil

Shark Tooth Fossil

Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)

Amber with dark mineral/organic inclusions (Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)) — gemstone

Amber with dark mineral/organic inclusions

Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)

Petrified Wood / Fossilized Wood (Silicified Wood (Silicon Dioxide - SiO2)) — fossil

Petrified Wood / Fossilized Wood

Silicified Wood (Silicon Dioxide - SiO2)

Amber (Tumbled/Polished) (Succinite (Fossilized Tree Resin)) — mineraloid

Amber (Tumbled/Polished)

Succinite (Fossilized Tree Resin)

Fossilized Megalodon Tooth Fragment (Otodus megalodon (Carcharocles megalodon fossil)) — sedimentary

Fossilized Megalodon Tooth Fragment

Otodus megalodon (Carcharocles megalodon fossil)

Fossilized shell or bone fragment (Indeterminate biogenic carbonate/phosphate fossil; likely a fragment of fossil shell or small vertebrate bone) — fossil

Fossilized shell or bone fragment

Indeterminate biogenic carbonate/phosphate fossil; likely a fragment of fossil shell or small vertebrate bone

Amber (Succinited (fossilized tree resin)) — fossil

Amber

Succinited (fossilized tree resin)

Amber (Succinite / Fossilized Resin (C10H16O)) — fossil

Amber

Succinite / Fossilized Resin (C10H16O)

Fossilized wood or bone fragment (Indeterminate permineralized organic fossil; possibly silicified wood or fossil bone) — fossil

Fossilized wood or bone fragment

Indeterminate permineralized organic fossil; possibly silicified wood or fossil bone

Concretion (Sedimentary Concretion) — sedimentary

Concretion

Sedimentary Concretion

Fossilized Crinoid Stem Segment (Crinoid (Phylum Echinodermata, Class Crinoidea)) — sedimentary

Fossilized Crinoid Stem Segment

Crinoid (Phylum Echinodermata, Class Crinoidea)

Petrified Wood (Silicon Dioxide (SiO2)) — fossil

Petrified Wood

Silicon Dioxide (SiO2)

Amber (with potentially inclusions) (Succinite (Fossilized Tree Resin)) — Mineraloid

Amber (with potentially inclusions)

Succinite (Fossilized Tree Resin)

Fossilized Echinoid / Sea Urchin Internal Mold (Echinoidea internal cast (steinkern)) — fossil

Fossilized Echinoid / Sea Urchin Internal Mold

Echinoidea internal cast (steinkern)

Fossil gastropod shell (Fossilized marine gastropod; exact genus/species cannot be determined from the image) — fossil

Fossil gastropod shell

Fossilized marine gastropod; exact genus/species cannot be determined from the image

Fossil plant impression slab (Fossilized plant compression/impression; exact taxon indeterminate from the image) — fossil

Fossil plant impression slab

Fossilized plant compression/impression; exact taxon indeterminate from the image

Fossilized wood (petrified wood) (Silicified fossil wood; commonly quartz/chalcedony (SiO₂) replacing wood) — fossil

Fossilized wood (petrified wood)

Silicified fossil wood; commonly quartz/chalcedony (SiO₂) replacing wood

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Petrified Wood (Silicified Wood (SiO2 permineralization)) — fossil

Petrified Wood

Silicified Wood (SiO2 permineralization)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Mammoth Tooth (Mammuthus tooth) — fossil

Mammoth Tooth

Mammuthus tooth

Fossil Coral (Phylum Cnidaria / Rugosa or Tabulata) — fossil

Fossil Coral

Phylum Cnidaria / Rugosa or Tabulata

Amber (Succinite (fossilized resin, C10H16O)) — mineral

Amber

Succinite (fossilized resin, C10H16O)

Banded Marble (Egg Carving) (Metamorphic crystalline limestone (predominantly Calcite, CaCO3)) — metamorphic

Banded Marble (Egg Carving)

Metamorphic crystalline limestone (predominantly Calcite, CaCO3)

Amber (Fossilized Tree Resin (C10H16O)) — gemstone

Amber

Fossilized Tree Resin (C10H16O)

Fossilized Dinosaur Skull (Tyrannosaurus rex) (Tyrannosaurus rex (permineralized fossil), rich in Hydroxylapatite/Silica) — sedimentary

Fossilized Dinosaur Skull (Tyrannosaurus rex)

Tyrannosaurus rex (permineralized fossil), rich in Hydroxylapatite/Silica

Amber (Succinite (organic hydrocarbon)) — mineraloid

Amber

Succinite (organic hydrocarbon)

Coal (likely bituminous coal) (Bituminous coal; predominantly carbon with organic macerals and minor clay/pyrite) — sedimentary

Coal (likely bituminous coal)

Bituminous coal; predominantly carbon with organic macerals and minor clay/pyrite

Fossilized Shell Fragment / Mother of Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral) — fossil

Fossilized Shell Fragment / Mother of Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral

Amber (Fossilized Tree Resin (C10H16O)) — gemstone

Amber

Fossilized Tree Resin (C10H16O)

Fossilized Shark Tooth (Partial) (Elasmobranchii (fossil tooth fragment)) — sedimentary

Fossilized Shark Tooth (Partial)

Elasmobranchii (fossil tooth fragment)

Possible fossilized bone fragment (Fossil bone, composition primarily carbonate-hydroxylapatite [Ca₅(PO₄)₃(OH)]) — fossil

Possible fossilized bone fragment

Fossil bone, composition primarily carbonate-hydroxylapatite [Ca₅(PO₄)₃(OH)]

Amber (Succinite (C10H16O)) — mineral

Amber

Succinite (C10H16O)

Amber (Succinite (organic gemstone, approx. C10H16O)) — fossil

Amber

Succinite (organic gemstone, approx. C10H16O)

Amber (Succinite (Fossilized Tree Resin)) — gemstone

Amber

Succinite (Fossilized Tree Resin)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Green Moss Agate (Agate (Silicon Dioxide, SiO2) with inclusions) — mineral

Green Moss Agate

Agate (Silicon Dioxide, SiO2) with inclusions

Moss Agate (Silicon Dioxide (SiO2) with Chlorite/Hornblende inclusions) — mineral

Moss Agate

Silicon Dioxide (SiO2) with Chlorite/Hornblende inclusions

Moss Agate (Silicon Dioxide (Chalcedony variety)) — mineral

Moss Agate

Silicon Dioxide (Chalcedony variety)

Moss Agate (Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Brecciated Jasper / Fossiliferous Jasper Egg (Cryptocrystalline Quartz (SiO2) with iron oxides and mineral inclusions) — sedimentary

Brecciated Jasper / Fossiliferous Jasper Egg

Cryptocrystalline Quartz (SiO2) with iron oxides and mineral inclusions