Fossil

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

Petoskey Stone

Hexagonaria percarinata

Shale

Shale (clastic sedimentary rock composed of silt and clay-sized particles)

Megalodon Shark Tooth Fossil

Otodus megalodon (fossilized in sedimentary matrix)

Petrified Wood

Silicified Wood (primarily SiO2)

Gastropod Steinkern (Fossilized Snail Cast)

Phylum Mollusca, Class Gastropoda (Commonly CaCO3 or SiO2 after replacement)

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Sand Dollar Fossil (Echinoidea)

Class Echinoidea (likely order Clypeasteroida), CaCO3 (Calcite)

Fossiliferous Limestone

CaCO3 (principally Calcite or Aragonite)

Limestone with Fossil Impression

Calcium Carbonate (CaCO3)

Sandstone with Trace Fossils

Arenite with Ichnofossils

Petrified Wood

Silicified Wood (SiO2)

Favosites Fossil (Honeycomb Coral)

Favosites (Extinct genus of tabulate coral)

Siderite Concretion (Nodule)

Iron Carbonate (FeCO3) Concretion

Concretion in Shale

Siltstone/Shale with Siderite or Calcareous concretions

Siderite Concretion in Shale

Iron carbonate (FeCO3) in Mudstone/Shale matrix

Fossilized Coral (Petoskey-like or Favosites)

Anthozoa (Fossilized Coral)

Glauconitic Sandstone with possible Trace Fossil

Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Fossiliferous Limestone

Limestone (CaCO3 - Calcium Carbonate)

Fossilized Gastropod (Snail)

Class Gastropoda (internal mold or 'steinkern')

Stromatolite

Stromatolite (Cyanobacteria-formed Organo-sedimentary structure)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclastic inclusions

Shale or Mudstone River Pebble

Argillaceous sedimentary rock

Megalodon Shark Tooth (Partial Fossil)

Otodus megalodon (fossilized in Calcium Phosphate/Apatite)

Kambaba Jasper

Stromatolite Jasper (Microcrystalline Quartz with Cyanobacteria fossile)

Megalodon Shark Tooth Fossil

Otodus megalodon

Limestone with Fossil inclusions

Fossiliferous Limestone (CaCO3)

Sandstone

Arenite (SiO2 primarily)

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 impurities)

Sandstone

Arenite (primary component SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite

Sandstone

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Fossiliferous Limestone

Carbonate sedimentary rock (CaCO3)

Sandstone (River Cobble)

Clastic sedimentary rock (primarily SiO2 with various lithic fragments)

Sandstone

Arenite (SiO2 principal)