Organic Specimen (Fossil)

Fossilized Coral (Petrified Coral)

Lithostrotionella (example genus) / Scleractinia

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Limestone with Gastropod Fossil

Sedimentary Calcium Carbonate (CaCO3) with Gastropoda inclusion

Amber

Succinite (Organic Gemstone)

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Lepidodendron Fossil (Scale Tree)

Lepidodendron

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Inclusions

Limestone with Fossil inclusions

Fossiliferous Limestone (CaCO3)

Fossilized tooth, likely a mammalian tooth fragment

Indeterminate fossil tooth; possibly an ungulate or carnivoran tooth

Fossiliferous Limestone

Biogenic Limestone (CaCO3)

Shark Tooth Fossil

Carcharodonta (order Lamniformes), likely Carcharias spp.

Botiroidal Chalcedony or Silicified Fossil Coral

Silicon Dioxide (SiO2) - Chalcedony / Scleractinia (if fossilized)

Petrified Wood

Silicified Wood (primarily SiO2)

Fossiliferous Limestone

Fossiliferous Calcite (CaCO3)

Petrified Wood

Silicified Wood (SiO2 permineralization)

Fossiliferous Limestone

Sedimentary Limestone (CaCO3) containing Crinoid or Brachiopod remains

Ferruginous Sandstone (with possible trace fossils)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)

Fossiliferous limestone (likely ammonite/gastropod-bearing)

Bioclastic limestone; predominantly calcite (CaCO₃)

Fossil Shark Tooth

Carcharadon sp. (likely Carcharodon carcharias or similar Lamniformes)

Fossil Shark Tooth

Otodus sp. (likely Otodus obliquus) fossil

Fossiliferous Brachiopod in Shale

Brachiopoda (Phylum) preserved in Carbonaceous Shale

Sand Tiger Shark Tooth

Carcharias taurus

Fossilized bone fragment (probable mammalian tooth or bone)

Mineralized bone, commonly hydroxyapatite [Ca5(PO4)3(OH)] replaced or impregnated by silica/calcite

Fossil bivalve shell

Ribbed pectinid or related bivalve; originally calcite/aragonite (CaCO₃), likely partially mineralized

Fossilized Bark

Lepidodendron / Sigillaria fossil impression

Fossiliferous Limestone

Limestone (Calcium Carbonate - CaCO3)

Pyritic Shale

Carbonaceous Shale with Iron Pyrite (FeS2)

Chert with Fossil Brachiopod

Microcrystalline Quartz (SiO2) with Calcitic Brachiopod inclusion

Fossiliferous Limestone

Limestone (CaCO3 with Bioclasts)

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Organic Inclusions

Fossiliferous Limestone

Calcareous biomicrite / Calcium Carbonate (CaCO3)

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone

Biogenic Limestone (CaCO3)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclasts

Likely fossil shell fragment

Indeterminate mollusk fossil; possibly a gastropod or bivalve in limestone

Polished amber

Fossilized tree resin (primarily organic polymerized diterpenes)

Fossiliferous Limestone

Fossiliferous Limestone (containing bioclasts)

Fossiliferous limestone

Bioclastic carbonate rock; predominantly calcite (CaCO₃)

Chert (Fossiliferous Chert/Flint)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (primarily SiO2)

Sandstone (River Cobble)

Clastic sedimentary rock (primarily SiO2)