Fossilized Shell
Invertebrate fossil (Bivalvia or Brachiopoda)
fossil
Category
Organic Gemstone (Fossilized Resin)
Browse organic gemstone (fossilized resin) specimens identified by the Rock Identifier community.
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Fossilized Bone
Permineralized Vertebrate Fossil
sedimentary
Pink shell fragment
Calcium carbonate, likely aragonite or calcite (CaCO₃); probably a bivalve or gastropod shell fragment
fossil
Fossilized Shark Tooth (Fragment)
Elasmobranchii (fossilized tooth)
fossil
Fossilized Bone Fragment
Vertebrate Fossil
fossil
Fossilized Bone
Permineralized Bone (Vertebrate Fossil)
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
not a rock (synthetic material)
Fossilized Brachiopod
Brachiopoda (Phylum)
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Fossilized Coral
Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)
sedimentary
Fossilized Coral
Cnidaria fossil / Calcite-replaced coral
fossil
Fossilized Vertebra
Chordata fossil (Vertebra)
fossil
Megalodon Shark Tooth
Otodus megalodon
fossil
Polished amber-like chalcedony (likely carnelian or yellow jasper)
Microcrystalline quartz, SiO₂; exact identification is uncertain from the image
mineral
Fossiliferous Sandstone
Sedimentary rock containing invertebrate fossils
fossil
Fossiliferous Limestone / Petrifaction
Sedimentary rock with fossil inclusions / Calcium Carbonate (CaCO3)
fossil
Fossiliferous Limestone or Shale
Biomicrite (if limestone) or Fossiliferous Shale
sedimentary
Fossil tooth
Mineralized vertebrate tooth; exact animal and species cannot be determined from the image
fossil
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)
sedimentary
Fossilized Coral
Scleractinian Anthozoa (Fossilized Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Calcium carbonate matrix with macrofossils (CaCO3)
fossil
Shark Tooth Fossil
Vertebrate fossilized tooth (Chondrichthyes)
fossil
Fossiliferous Kalkstein (Marl/Sandstone)
Fossiliferous calcarenite/siltstone
sedimentary
Fossil mammalian skull
Fossilized vertebrate bone; exact taxon cannot be determined from the image
fossil
Fossilized Bone
Vertebrate Fossil Fragment (Calcium Phosphate / Hydroxyapatite)
fossil
Fossilized Bone
Fossilized Vertebrate Bone (Per mineralized)
fossil
Red Coral (Dyed or Reconstituted)
Corallium rubrum (if natural) or Calcite/Aragonite with dye
gemstone
Fossilized Shark Tooth
Chondrichthyes (Class) fossilized tooth
fossil
Fossiliferous Limestone
Calcium carbonate matrix with macrofossils (CaCO3)
sedimentary
Fossil bivalve shell
Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features
fossil
Fossiliferous Limestone
Limestone with embedded fossil cross-section
sedimentary
Fossilized Wood / Petrified Wood
Petrified Wood (Silicified Flora)
fossil
Mammoth Tooth
Mammuthus tooth
fossil
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
sedimentary
Bivalve Fossil (Internal Mold/Steinkern)
Class Bivalvia (Fossilized Mold)
sedimentary
Limestone and Quartz Gravel with Petrified Wood
Sedimentary gravel aggregate and fossilized wood
sedimentary
Fossilized Shark Tooth
Selachimorpha fossil
fossil
Fossilized Shell Fragment / Mother of Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral
fossil
Fossilized Coral
Rugosa / Scleractinia (Agatized or Calcitized Coral)
fossil
Tumbled amber-colored chalcedony
Chalcedony (microcrystalline quartz, SiO₂), possibly yellow jasper or resinous amber-colored agate
mineral
Tumbled amber
Amber (fossilized plant resin; commonly succinite, C₁₀H₁₆O)
fossil