Organic Specimen (Fossil)

Cockle Shell Fossil

Cardium (Bivalvia)

Fossil Belemnite Guard

Belemnitida (Order), often Hibolites or Neohibolites spp.

Orthoceras Fossil in Limestone

Orthoceras regulare (Class Cephalopoda; Order Orthocerida)

Limestone with Algal/Lichen Colonization

Calcium Carbonate (CaCO3)

Fossil Solitary Rugose Coral (Horn Coral)

Order Rugosa (e.g., Caninia, Zaphrentis, or Streptelasma)

Limestone (fossiliferous)

Calcium Carbonate (CaCO3)

Ironstone Concretion

Ironstone (Limonite/Goethite/Hematite mixture)

Spinosaurus fossil (permineralized bone)

Spinosaurus aegyptiacus (Calcium phosphate mineralized with silica/sediment)

Shale

Argillaceous Sedimentary Rock

Fossilized Brachiopod

Brachiopoda (Phylum), likely Order Spiriferida or Rhynchonellida

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide Fe2O3 cement)

Dog (Sleeping)

Canis familiaris (or Canis lupus familiaris)

Moss Agate

Chalcedony (Silicon Dioxide with inclusions) - SiO2

Sandstone (Quartzose)

Arenite (primarily SiO2)

Tumbled agate (probable moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron/manganese dendritic inclusions

Limestone

Calcium Carbonate (CaCO3)

Limestone (Weathered)

Sedimentary Carbonate Rock (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone

Sedimentary Calcium Carbonate (CaCO3)

Sandstone

Arenite (SiO2 primarily)

Fossil Shell

Phylum Mollusca (Bivalvia or Brachiopoda)

Sedimentary Rock Fragments

Clastic Sedimentary Rock

Dendritic Siltstone

Siltstone with Manganese Dendrites (MnO2)

Honeycomb Coral Fossil

Favosites (extinct genus of tabulate coral)

Fossil Shark Tooth

Chondrichthyes (class)

Rugose Coral Fossil

Rugosa (Order) / Horn Coral

Ammonite Fossil

Ammonoidea subclass (calcium carbonate / silica replacement)

Fossilized Shark Tooth

Carcharocles sp. or similar Lamniformes

Gastropod Fossil (Snail Steinkern)

Class Gastropoda fossil, composed of Calcium Carbonate (CaCO3)

Sandstone

Arenite (SiO2 primarily)

Fossil Shark Tooth

Elasmobranchii (Lamniformes order likely)

Crushed Limestone Aggregate

Limestone (Calcium Carbonate, CaCO3)

Brachiopod Fossil

Phylum Brachiopoda

Horn Coral Fossil

Order Rugosa

Ironstone Concretion

Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Sedimentary rock primarily composed of Calcite (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Limestone (Calcium Carbonate, CaCO3)

Limestone (Weathered / Limonite-stained)

Sedimentary carbonate rock (CaCO3)

Sandstone

Arenite (SiO2 based)

Sandstone

Clastic sedimentary rock (primarily SiO2)