Fossil

Sandstone

Arenite (composed primarily of SiO2)

Fossilized tooth fragment

Likely a mammalian molar or tooth fragment; exact animal cannot be determined from the image

Fossiliferous Limestone with Brachiopod

Phylum Brachiopoda in Sedimentary Matrix (CaCO3)

Fossil Shark Tooth

Odontaspididae indet. (likely Sand Tiger Shark tooth)

Silicified Snail Fossil

Gastropod (likely replaced by Chalcedony/Quartz - SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous)

Clastic sedimentary rock (SiO2 with Fe2O3)

Sandstone Pebbles

Arenite

Seashell (Cone Snail Shell)

Conus sp. (Calcium Carbonate, CaCO3)

Sandstone

Arenite (Siliclastic sedimentary rock)

Fossiliferous Limestone

Bioclastic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone

Fossiliferous Carbonate Rock (CaCO3)

Sandstone (with Iron Staining)

Arenite

Sandstone

Arenite (SiO2 primarily)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (SiO2 primarily)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Coarse Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 dominant)

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Crinoidal Limestone)

Bioclastic grainstone (CaCO3)

Fossilized Bored Limestone

Limestone with Ichnofossils (Gastrochaenolites or Entobia)

Sandstone Geode

Sedimentary Geode (Silica/Calcite composition)

Fossilized coral or carbonate fossil fragment

Calcareous fossil, likely colonial coral (order Hexacorallia; uncertain from image)

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Fossil gastropod (snail shell)

Fossilized gastropod; original shell likely aragonite or calcite (CaCO₃), now partly mineral-replaced

Polished fossil ammonite slice

Ammonoidea (commonly polished juvenile ammonite or nautiloid-like cephalopod fossil)

Coral Fossil (Fossilized Coral)

Hexagonaria or similar rugose/tabulate coral fossil (Calcium Carbonate, CaCO3)

Weathered fossiliferous limestone

Calcitic limestone, primarily calcium carbonate (CaCO₃), possibly containing fossil fragments

Fossil Shark Tooth

Carcharocles or Lamniformes (order)

Coral Fossil (Scleractinia)

Scleractinia (Order), primarily CaCO3 (Aragonite or Calcite)

Fossil tooth, likely shark tooth

Likely fossilized shark tooth (possibly a small lamniform shark; exact taxon cannot be confirmed from the image)

Fossilized shell or bone fragment

Indeterminate biogenic calcite or apatite fossil

Fossil fish impression or partial fish fossil

Indeterminate fossilized fish; likely compressed vertebrate remains in sedimentary rock

Fossiliferous Limestone (Coquina-like)

Biogenic Limestone

Crinoid and Coral Fossils in Limestone

Fossiliferous Limestone with Rugosa (order) and Crinoidea (class)

Weathered sandstone fragment

Quartz-rich sandstone (compositionally uncertain)

Sandstone/Quartzite

Sedimentary Rock (composed mainly of SiO2)

Petoskey Stone

Favosites alpenensis

Limestone

Calcium carbonate (CaCO3)

Sandstone (with potential Concretion or Fossil fragment)

Arenite (primarily SiO2)