Fossil

Fossiliferous limestone with a possible shell or trace fossil

Calcitic limestone (mostly CaCO₃), fossil identity indeterminate from the image

Fossiliferous Sandstone Pebble (with Crinoid / Shell Impression)

Sandstone containing fossiliferous inclusions (SiO2 matrix with calcite/silica cast fossil)

Fossil bivalve shell fragment

Likely a ribbed oyster or scallop-type bivalve; exact genus requires locality and preservation details

Sea Urchin Fossil

Echinoidea (test/fossil)

Shark Tooth Fossil

Selachii fossil

Starfish Fossil

Asteroidea fossil

Fossilized Coral (Petrified Coral)

Anthozoa fossil

Fossilized Bone Fragment

Vertebrate Fossil

Fossilized Echinoid (Sea Urchin)

Echinoidea (Fossil)

Bivalve Fossil (Clam Fossil)

Class Bivalvia (likely Gryphaea or similar Order)

Fossil Shell

Invertebrate fossil (Mollusca)

Fossiliferous limestone

Bioclastic carbonate rock, primarily calcite (CaCO₃)

Tumbled, weathered limestone or calcareous concretion

Calcite-rich limestone; predominantly calcium carbonate (CaCO₃)

Fossilized Bone Chunk

Permineralized Vertebrate Bone (indeterminant)

Fossiliferous limestone

Calcarenite/bioclastic limestone, predominantly calcite (CaCO₃)

Silicified fossil shell, likely fossil oyster or clam

Silicified bivalve fossil; shell originally aragonite/calcite, partly replaced by chalcedony (SiO₂)

Crinoid Stem Fossil in Matrix

Crinoid (Class Crinoidea) in Limestone/Siltstone matrix

Possible fossilized tooth fragment

Indeterminate fossil enamel/dentine; possibly shark tooth fragment

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Fossils

Fossiliferous Limestone (Crinoidal)

Calcite-bearing bioclastic packstone (CaCO3)

Orthoceratid Fossil in Limestone

Orthoceras (extinct genus of Nautiloid Cephalopod)

Devil's Toenail (Fossil Oyster)

Gryphaea arcuata (Calcium Carbonate, CaCO3)

Brachiopod Fossil in Limestone

Phylum Brachiopoda embedded in sedimentary rock

Fossilized Horse Tooth

Equus sp. (Tooth)

Fossilized Bone

Permineralized Vertebrate Bone

Fossilized Tooth

Vertebrate Fossilized Tooth (Mineralized Biogenic Material)

Chert or flint with chalcedony/quartz veins

Microcrystalline silica: primarily quartz (SiO₂), including chalcedony; possible fossiliferous limestone or silicified material

Fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃)

Fossiliferous shale or mudstone with a brachiopod fossil

Likely a spiriferid brachiopod fossil in dark shale/mudstone; exact species and age require locality and examination

Fossilized Bivalve Shell

Bivalvia (Phylum Mollusca)

Fossilized Shark Tooth

Chondrichthyes tooth

Mammoth or Mastodon Tooth Fragment

Mammuthus / Mammut molar fragment

Fossil Brachiopod or Mollusk Cast

Phylum Brachiopoda / Mollusca internal mold

Fossil Shark Tooth

Chondrichthyes (Class)

Fossil Snail

Gastropoda (fossilized)

Brachiopod Fossil

Phylum Brachiopoda (order potentially Spiriferida)

Bivalve Fossil (Internal Mold)

Bivalvia (Phalladomya or similar genus)

Mosasaur Tooth

Mosasaurus beaugei (Fossilized Tooth)

Mosasaur Tooth Fossil

Mosasauridae (likely Prognathodon or Plioplatecarpus)

Sandstone with Fossil Leaf Impression

Sedimentary rock (Sandstone/Siltstone matrix) with Carbonaceous film fossil

Fish Fossil in Limestone

Lycoptera (likely) in Micritic Limestone

Fossilized Fish (Lepidotes)

Lepidotes sp. (Order: Lepisosteiformes)