Amber
Fossilized Tree Resin (Successite)
fossil
Category
Organic Specimen (Fossil)
Browse organic specimen (fossil) specimens identified by the Rock Identifier community.
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Mosasaur Tooth
Mosasaurus sp.
fossil
Petrified Wood
Silicified Wood (SiO2 permineralization)
fossil
Sea Shell (Mollusk Shell)
Calcium Carbonate (Aragonite/Calcite)
fossil
Fossilized Shell in Limestone
Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock
sedimentary
Fossilized Bone Fragment
Vertebrate Fossil Material (Apatite/Calcium Phosphate)
fossil
Ironstone Concretion (Boxwork)
Siderite-Limonite Concretion (FeO(OH)·nH2O)
sedimentary
Fossil Coral
Hexagonaria or similar rugose/tabulate coral fossil (Calcium Carbonate, CaCO3)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Amber
Succinate (Fossilized Tree Resin)
fossil
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Dendritic Agate (Tree Agate)
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Fossiliferous Limestone with Fossil Fragment
Fossiliferous Limestone (CaCO3 with organic remains)
fossil
Fossil Brachiopod
Phylum Brachiopoda
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Bivalve Fossil (Shell-bearing Sedimentary Rock)
Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix
fossil
Tumbled, weathered limestone or calcareous concretion
Calcite-rich limestone; predominantly calcium carbonate (CaCO₃)
sedimentary
Chert (with Drusy Quartz Pocket)
Silicon Dioxide (SiO2)
sedimentary
Fossiliferous Limestone
Carbonate Rock (CaCO3 with organic inclusions)
sedimentary
Flint / Chert Nodule
Microcrystalline quartz (SiO2)
sedimentary
Chert (Gravel)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary
Amber (Copal)
Succiniferous Resin
mineraloid
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossil Shark Tooth (Otodus obliquus)
Otodus obliquus; hydroxyapatite (mineralized form Ca5(PO4)3(OH))
sedimentary (fossiliferous)
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
sedimentary
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with marine fossils
sedimentary
Fossiliferous Limestone
Calcium carbonate matrix with macrofossils (CaCO3)
fossil
Belemnoit (Fossil)
Belemnoidea (Order), Rostrum / Guard
sedimentary
Petrified Wood
Silicon Dioxide (SiO2)
fossil
Polished green moss agate cabochon
Moss agate: microcrystalline quartz (SiO₂) with included chlorite/actinolite or iron-manganese minerals
mineral
Fossil Shark Tooth Fragment
Elasmobranchii dentition (fragment)
fossil
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Mosasaur Jaw Fossil in Matrix
Mosasaurus (family Mosasauridae) in Phosphate Sandstone
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
sedimentary
Concretion
Septarian Concretion (Fragmentary)
sedimentary
Fossilized Bivalve Shell (Fossilized Clam)
Bivalvia (class) / CaCO3 (Calcium Carbonate)
fossil