Rock Identifier

Category

Fossil

Browse fossil specimens identified by the Rock Identifier community.

Learn about Fossil in the encyclopedia

Fossil Opal

Bone Opal

Turritella Jasper

Amber

Fossiliferous Limestone

Fossiliferous Limestone

Turritella Agate

Turritella Agate

Petrified Wood

Diatomite

Guano

Jet

Diatomaceous Earth

Opalized Wood

Fossilized Bark (Lepidodendron / Sigillaria fossil impression) — fossil

Fossilized Bark

Lepidodendron / Sigillaria fossil impression

Fossiliferous Limestone (Limestone with fossil inclusions (CaCO3)) — sedimentary

Fossiliferous Limestone

Limestone with fossil inclusions (CaCO3)

Kambaba Jasper (Rhyolite (with Stromatolite fossil inclusions)) — sedimentary

Kambaba Jasper

Rhyolite (with Stromatolite fossil inclusions)

Fossilized Shark Tooth (Sand Tiger) (Carcharias taurus (fossil specimen)) — sedimentary

Fossilized Shark Tooth (Sand Tiger)

Carcharias taurus (fossil specimen)

Amber (specifically Burmese Amber or Burmite) (Succiniferous fossil resin (C10H16O)) — mineraloid

Amber (specifically Burmese Amber or Burmite)

Succiniferous fossil resin (C10H16O)

Calamites (Calamites (Pith cast fossil)) — sedimentary

Calamites

Calamites (Pith cast fossil)

Fossil Shark Tooth (Selachimorpha (Chondrichthyes dental fossil)) — sedimentary

Fossil Shark Tooth

Selachimorpha (Chondrichthyes dental fossil)

Polished fossil coral (likely agatized coral) (Fossilized colonial coral; commonly silicified as chalcedony/quartz (SiO₂)) — fossil

Polished fossil coral (likely agatized coral)

Fossilized colonial coral; commonly silicified as chalcedony/quartz (SiO₂)

Likely tumbled or polished fossil shell (Fossilized mollusk shell; exact species cannot be determined from this image) — fossil

Likely tumbled or polished fossil shell

Fossilized mollusk shell; exact species cannot be determined from this image

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with fossil inclusions) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with fossil inclusions

Porous fossil fragment (possibly fossilized coral or shell) (Unidentified fossil carbonate; likely calcite/aragonite) — fossil

Porous fossil fragment (possibly fossilized coral or shell)

Unidentified fossil carbonate; likely calcite/aragonite

Bivalve Fossil (Cockle shell) (Class Bivalvia (e.g., Anadara or Veneridae family)) — fossil

Bivalve Fossil (Cockle shell)

Class Bivalvia (e.g., Anadara or Veneridae family)

Limestone Pebble with Crinoid Fossil (Calcium Carbonate (CaCO3) - Fossiliferous Limestone) — sedimentary

Limestone Pebble with Crinoid Fossil

Calcium Carbonate (CaCO3) - Fossiliferous Limestone

Fossilized gastropod (snail) (Silicified or calcite-replaced gastropod fossil; exact genus indeterminate) — fossil

Fossilized gastropod (snail)

Silicified or calcite-replaced gastropod fossil; exact genus indeterminate

Fossiliferous limestone (Bioclastic carbonate rock, chiefly calcite (CaCO₃), containing visible marine fossils) — sedimentary

Fossiliferous limestone

Bioclastic carbonate rock, chiefly calcite (CaCO₃), containing visible marine fossils

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

Chert (Jasper / Flint Variant)

Microcrystalline Quartz (SiO2)

Fossilized wood (petrified wood) (Silicified wood; commonly quartz or chalcedony replacing wood tissue) — fossil

Fossilized wood (petrified wood)

Silicified wood; commonly quartz or chalcedony replacing wood tissue

Polished ammonite fossil pendant (Ammonite; likely a polished, mineral-replaced ammonoid shell (commonly Calcite or Aragonite)) — fossil

Polished ammonite fossil pendant

Ammonite; likely a polished, mineral-replaced ammonoid shell (commonly Calcite or Aragonite)

Polished fossil coral (Agatized or silicified coral, commonly fossilized stony coral (Scleractinia); exact genus cannot be determined from the image) — fossil

Polished fossil coral

Agatized or silicified coral, commonly fossilized stony coral (Scleractinia); exact genus cannot be determined from the image

Fossilized Rugose Coral (Horn Coral) (Order Rugosa) — fossil

Fossilized Rugose Coral (Horn Coral)

Order Rugosa

Petoskey Stone (Hexagonaria percarinata) — fossil

Petoskey Stone

Hexagonaria percarinata

Fossilized Mosasaur Tooth (Mosasauridae (likely Prognathodon or Mosasaurus)) — fossil

Fossilized Mosasaur Tooth

Mosasauridae (likely Prognathodon or Mosasaurus)

Fossilized Shark Tooth (Sand Tiger) (Carcharias sp. (Fossilized Tooth)) — fossil

Fossilized Shark Tooth (Sand Tiger)

Carcharias sp. (Fossilized Tooth)

Mosasaur Tooth (Mosasaurus sp.) — fossil

Mosasaur Tooth

Mosasaurus sp.

Crinoid Stem Fossil (St John's Bead) (Crinoidea (Class)) — fossil

Crinoid Stem Fossil (St John's Bead)

Crinoidea (Class)

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

Petrified Wood Fragment

Silicified Wood (SiO2)

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

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

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

Fossilized Shell Impression / Siltstone Fossil

Bivalvia / Brachiopoda mold in Siltstone

Fossilized Shark Tooth (Otodus obliquus) (Otodus obliquus (Mineralized Apatite / Bio-apatite)) — fossil

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (Mineralized Apatite / Bio-apatite)

Fossilized Shark Tooth (Elasmobranchii tooth (commonly Otodus or Scapanorhynchus sp.)) — fossil

Fossilized Shark Tooth

Elasmobranchii tooth (commonly Otodus or Scapanorhynchus sp.)

Fossilized Shark Tooth (Chondrichthyes tooth) — fossil

Fossilized Shark Tooth

Chondrichthyes tooth

Coal (Bituminous or sub-bituminous coal (carbonaceous rock)) — sedimentary

Coal

Bituminous or sub-bituminous coal (carbonaceous rock)

Fossilized Shark Tooth (Chondrichthyes (Class) fossilized tooth) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class) fossilized tooth

Fossilized Coral (Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)) — fossil

Fossilized Coral

Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)

Horn Coral Fossil (Rugosa (Order Rugosa)) — fossil

Horn Coral Fossil

Rugosa (Order Rugosa)

Mammoth or Mastodon Tooth Fragment (Mammuthus / Mammut molar fragment) — fossil

Mammoth or Mastodon Tooth Fragment

Mammuthus / Mammut molar fragment

Dinosaur Claw Fossil (Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)) — fossil

Dinosaur Claw Fossil

Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)

Bivalve Fossil (Clam/Mollusk) (Class: Bivalvia (Order: Veneroida), Calcium Carbonate (CaCO3)) — sedimentary

Bivalve Fossil (Clam/Mollusk)

Class: Bivalvia (Order: Veneroida), Calcium Carbonate (CaCO3)

Fossilized Rugose Coral (Order Rugosa (Calcium Carbonate - CaCO3)) — sedimentary

Fossilized Rugose Coral

Order Rugosa (Calcium Carbonate - CaCO3)

Fossilized Bone Fragment (Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)) — sedimentary

Fossilized Bone Fragment

Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)

Fossilized Coral (Petoskey Stone or similar) (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary

Fossilized Coral (Petoskey Stone or similar)

Hexagonaria percarinata (Fossilized Rugose Coral)

Sand Dollar Fossil (Echinoidea (Clypeasteroida)) — sedimentary

Sand Dollar Fossil

Echinoidea (Clypeasteroida)