Fossil

Petrified Wood (Silicified Wood)

Silicified fossil wood (SiO2)

Fossilized Shark Tooth (Partial)

Elasmobranchii (fossil tooth fragment)

Amber

Succiniferous fossil resin (C10H16O)

Fossilized Turritella Gastropod (Internal Mold)

Turritella (Fossil Gastropod Crust)

Amber

Succiniferous fossil resin (C10H16O)

Amber

Succiniferous fossil resin (C10H16O)

Fossiliferous Limestone

Fossiliferous Calcite (CaCO3)

Fossil Shell in Sedimentary Matrix

Bivalvia (fossil) in Calcium Carbonate Matrix

Fossilized Crinoid Stem Segment

Crinoid (Phylum Echinodermata, Class Crinoidea)

Echinoid Fossil (Sea Urchin Fossil)

Echinoidea (phylum Echinodermata), often preserved as Calcite (CaCO3)

Petrified Wood

Silicified Paleoxylon (SiO2)

Dinosaur Bone (Gembone)

Petrified Dinosaur Bone (Apatite/Silica replacement)

Gastropod Fossil (Snail Internal Mold)

Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)

Fossilized Coral (Petoskey Stone / Favosites)

Favosites (extinct genus of tabulate coral)

Petrified Wood

Silicon Dioxide (SiO2) - Calcified / Silicified Wood

Favosites Fossil (Honeycomb Coral)

Favosites (Extinct genus of Tabulate Coral)

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)

Horn Coral Fossil

Rugosa (Order Rugosa)

Fossilized Shark Tooth (Scapanorhynchus)

Scapanorhynchus texanus

Crinoid Fossil Stem Segment

Class Crinoidea (Echinodermata)

Fossil Coral

Cnidaria fossil (often Calcium Carbonate / CaCO3)

Ironstone (likely siderite or goethite-rich siltstone)

Ferruginous Siltstone

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Fossil Shark Tooth

Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)

Belemnoit Fossil (Thunderstick)

Belemnitida (Internal rostrum)

Bivalve Fossil (Clam)

Class Bivalvia, likely Mercenaria or similar genus

Horn Coral Fossil

Order Rugosa

Fossilized Echinoid (Sea Urchin)

Echinoidea (Class), often found as calcitic fossils

Fossil Coral

Cnidaria Anthozoa (Fossilized)

Sandstone

Sandstone (clastic sedimentary rock)

Sandstone

Arenite

Sandstone (Ferruginous)

Clastic Sedimentary Rock (Sandstone)

Limestone

Calcium Carbonate (CaCO3)

Sandstone with Quarzite clasts

Arenite (SiO2 based)

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone with Iron Oxide Staining

Arenite with Limonite/Hematite alteration

Sandstone

Arenite (SiO2 principal component)

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)

Marble

Recrystallized Calcite / Dolomite (CaCO3)

Sandstone (with carbonaceous plant fragments)

Arenite (composed primarily of SiO2)

Sandstone

Arenite