Sedimentary (Fossil)

Fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃)

Fossilized Shark Tooth (likely Sand Tiger Shark)

Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)

Fossil shell

Likely a fossilized marine bivalve shell; exact taxon is indeterminate from the image.

Fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃)

Fossilized Gastropod in Limestone

Gastropoda (Class) in Fossiliferous Limestone

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Fossiliferous limestone

Bioclastic carbonate rock, predominantly calcite (CaCO₃)

Sandstone with Fossil Leaf Impression

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

Fossilized Echinoid (Sea Urchin)

Echinoidea (Fossil)

Weathered fossil shell fragment

Likely a bivalve or gastropod shell, composed mainly of biogenic calcite/aragonite (CaCO₃)

Fossilized Bone Chunk

Permineralized Vertebrate Bone (indeterminant)

Sea Urchin Fossil

Echinoidea (test/fossil)

Fossil plant impression slab

Fossilized plant compression/impression; exact taxon indeterminate from the image

Polished fossil-bearing limestone

Fossiliferous micritic limestone, likely containing gastropod or ammonoid fragments

Polished fossiliferous limestone, likely crinoidal or coral limestone

Calcite (CaCO₃), fossiliferous carbonate rock

Fossiliferous Limestone with Crinoid Stem

Sedimentary Rock with Echinodermata fossil fragment

Fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃)

Weathered limestone or calcitic fossil/reef fragment

Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone

Sandstone and Conglomerate pebbles

Sedimentary clastic rock

Fossiliferous Limestone with Rugose Coral

Calcium Carbonate (CaCO3) featuring Rugosa (extinct order of solitary and colony corals)

Fossil Sponge / Horn Coral / Crinoid Stem

Phylum Porifera or Cnidaria fossilized in calcium carbonate / silica

Bivalve Fossil (Clam Shell)

Class Bivalvia

Fossilized Gastropod Internal Mold

Steinkern (Mollusca: Gastropoda)

Fossilized Bivalve in Limestone

Class Bivalvia within Sedimentary Matrix (likely CaCO3)

Crinoid Stalk in Limestone

Crinoid fossil in Biomicrite (Limestone)

Fossiliferous Sandstone

Sedimentary rock containing invertebrate fossils

Fossil fish slab

Fossilized fish remains, likely a laminated shale-hosted vertebrate fossil; exact taxon is indeterminate from the image

Bivalve Fossil (Clam Fossil)

Class Bivalvia (likely Gryphaea or similar Order)

Brachiopod Fossil in Limestone

Phylum Brachiopoda embedded in sedimentary rock

Fossiliferous Limestone

Calcium carbonate matrix with macrofossils (CaCO3)

Fossilized Gastropod / Coral

Phylum Mollusca / Cnidaria (Silicified or Calcified)

Shark Tooth Fossil

Chondrichthyes fossil

Fossilized Shell Impression / Siltstone Fossil

Bivalvia / Brachiopoda mold in Siltstone

Mosasaur Tooth Fossil

Mosasauridae (likely Prognathodon or Plioplatecarpus)

Fossil Crab

Decapoda (likely Avitelmessus or Raninidae family)

Fossilized Bone

Permineralized Vertebrate Bone

Fossilized bivalve or brachiopod fragment

Indeterminate fossil shell, likely calcitic or aragonitic carbonate

Chert or flint with chalcedony/quartz veins

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

Devil's Toenail

Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)

Fossil Bone Fragment

Petrified bone (permineralized hydroxyapatite)

Fossiliferous limestone

Calcitic limestone, primarily calcium carbonate (CaCO₃), with visible shell or coral fossils

Brachiopod Fossil

Rhynchonellida (Order)