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

Fossil Shark Tooth (Chondrichthyes (Class)) — fossil

Fossil Shark Tooth

Chondrichthyes (Class)

Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Scallop Shell Fossil (Pecten sp.) — fossil

Scallop Shell Fossil

Pecten sp.

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

Fossilized Shark Tooth

Chondrichthyes (class) fossilized tooth

Fossil Shark Tooth (Selachii (fossilized dentition)) — fossil

Fossil Shark Tooth

Selachii (fossilized dentition)

Fossilized Gastropod Steinkern (Class Gastropoda internal mold) — fossil

Fossilized Gastropod Steinkern

Class Gastropoda internal mold

Fossil Snail (Gastropoda (fossilized)) — fossil

Fossil Snail

Gastropoda (fossilized)

Fossil Sponge / Horn Coral / Crinoid Stem (Phylum Porifera or Cnidaria fossilized in calcium carbonate / silica) — fossil

Fossil Sponge / Horn Coral / Crinoid Stem

Phylum Porifera or Cnidaria fossilized in calcium carbonate / silica

Bivalve Fossil (Brachiopod or Scallop) (Class Bivalvia (or potentially Phylum Brachiopoda)) — fossil

Bivalve Fossil (Brachiopod or Scallop)

Class Bivalvia (or potentially Phylum Brachiopoda)

Fossilized Brachiopod Shell Fragment (Brachiopoda (Class: Rhynchonellata or Strophomenata)) — fossil

Fossilized Brachiopod Shell Fragment

Brachiopoda (Class: Rhynchonellata or Strophomenata)

Peanut Wood (Petrified Wood (Silicified Araucaria with Teredo boreholes)) — fossil

Peanut Wood

Petrified Wood (Silicified Araucaria with Teredo boreholes)

Crinoid Stem Fragment (Crinoid (Class Crinoidea)) — fossil

Crinoid Stem Fragment

Crinoid (Class Crinoidea)

Fossilized Echinoid (Sea Urchin) (Echinoidea (Class)) — sedimentary

Fossilized Echinoid (Sea Urchin)

Echinoidea (Class)

Fossilized Gastropod in Limestone (Gastropoda (Class) in Calcium Carbonate (CaCO3)) — sedimentary

Fossilized Gastropod in Limestone

Gastropoda (Class) in Calcium Carbonate (CaCO3)

Lepidodendron Fossil in Sandstone (Lepidodendron (Lycophytina, Lepidodendrales)) — sedimentary

Lepidodendron Fossil in Sandstone

Lepidodendron (Lycophytina, Lepidodendrales)

Pyritized Ammonite (Ammonitida (replaced by Iron Disulfide, FeS2)) — sedimentary

Pyritized Ammonite

Ammonitida (replaced by Iron Disulfide, FeS2)

Fossil fish specimen (Fossilized fish vertebrate, likely an articulated fish impression; exact taxon indeterminate) — fossil

Fossil fish specimen

Fossilized fish vertebrate, likely an articulated fish impression; exact taxon indeterminate

Fossil Coral (Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)) — fossil

Fossil Coral

Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)

Fossil Shark Tooth (Chondrichthyes tooth fossil) — fossil

Fossil Shark Tooth

Chondrichthyes tooth fossil

Fossil Shell (Brachiopod or Mollusk fossil) — fossil

Fossil Shell

Brachiopod or Mollusk fossil

Fossil Seashell (Invertebrate fossil (Bivalvia)) — fossil

Fossil Seashell

Invertebrate fossil (Bivalvia)

Fossilized Gastropod Internal Mold (Gastropoda (Steinkern fossil)) — fossil

Fossilized Gastropod Internal Mold

Gastropoda (Steinkern fossil)

Fossilized Vertebra (Chordata fossil (Vertebra)) — fossil

Fossilized Vertebra

Chordata fossil (Vertebra)

Fossil Bivalve / Ostreid Shell (Hag Stone / Perforated Pebble) (Phylum Mollusca, Class Bivalvia) — fossil

Fossil Bivalve / Ostreid Shell (Hag Stone / Perforated Pebble)

Phylum Mollusca, Class Bivalvia

Fossiliferous Sandstone (with Quartz patch) (Sedimentary Sandstone with Silicified Shell Fragments) — sedimentary

Fossiliferous Sandstone (with Quartz patch)

Sedimentary Sandstone with Silicified Shell Fragments

Fossiliferous Sandstone / Quartzite Pebble (Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)) — fossil

Fossiliferous Sandstone / Quartzite Pebble

Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)

Fossilized coral (likely colonial coral) (Fossil scleractinian coral; possibly *Thamnasteria* or a related coral) — fossil

Fossilized coral (likely colonial coral)

Fossil scleractinian coral; possibly *Thamnasteria* or a related coral

Petrified Wood (Silicified Wood (SiO2 - Quartz/Chalcedony replacement)) — Mineral / Fossil

Petrified Wood

Silicified Wood (SiO2 - Quartz/Chalcedony replacement)

Mineral / Fossil

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

Fossil Coral

Phylum Cnidaria / Rugosa or Tabulata

Belemnite Fossil (Belemnitida (rostrum)) — fossil

Belemnite Fossil

Belemnitida (rostrum)

Fossil gastropod in granite-like stone (Gastropoda indet.; enclosing rock likely polished granite or gneiss) — fossil

Fossil gastropod in granite-like stone

Gastropoda indet.; enclosing rock likely polished granite or gneiss

Fossilized echinoid (sea urchin), likely a flint/chalk-associated test (Echinoid fossil; likely a regular echinoid such as Echinocidaris or related taxon, composed mainly of recrystallized calcite (CaCO₃)) — fossil

Fossilized echinoid (sea urchin), likely a flint/chalk-associated test

Echinoid fossil; likely a regular echinoid such as Echinocidaris or related taxon, composed mainly of recrystallized calcite (CaCO₃)

Fossilized Shark Tooth (Chondrichthyes (class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (class)

Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Fossil Shark Tooth (Chondrichthyes (class)) — fossil

Fossil Shark Tooth

Chondrichthyes (class)

Shark Tooth Fossil (Carcharocles megalodon or similar fossilized shark tooth) — fossil

Shark Tooth Fossil

Carcharocles megalodon or similar fossilized shark tooth

Mosasaur Tooth Fossil (Mosasaurus sp.) — fossil

Mosasaur Tooth Fossil

Mosasaurus sp.

Fossilized Bone Fragment (Petrified Osseous Material) — fossil

Fossilized Bone Fragment

Petrified Osseous Material

Bivalve Internal Mold Fossil (Steinkern (Bivalvia mold)) — fossil

Bivalve Internal Mold Fossil

Steinkern (Bivalvia mold)

Rugose Coral (Horn Coral) Fossil (Order Rugosa (likely Grewingkia or Zaphrentis genus)) — fossil

Rugose Coral (Horn Coral) Fossil

Order Rugosa (likely Grewingkia or Zaphrentis genus)

Mammoth or Mastodon Tooth Fossil (Proboscidea tooth (Mammuthus or Mammut)) — fossil

Mammoth or Mastodon Tooth Fossil

Proboscidea tooth (Mammuthus or Mammut)

Fossil Shark Tooth (Otodus sp. (likely Otodus obliquus) fossil) — fossil

Fossil Shark Tooth

Otodus sp. (likely Otodus obliquus) fossil