Organic Specimen (Fossil)

Limestone (River Pebble)

Sedimentary Calcium Carbonate (CaCO3)

Chert (Jasper / Flint Variant)

Microcrystalline Quartz (SiO2)

Fossilized Rugose Coral (Horn Coral)

Order Rugosa

Amber with Fossil Inclusion

Fossilized Tree Resin (Succinite)

Sandstone

Arenite (Siliclastic sedimentary rock, primarily SiO2)

Dendritic Quartz Pebble

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Fossiliferous Flint / Chert

Microcrystalline quartz (SiO2) with embedded invertebrate fossils

Siltstone

Siltstone (Detrital Sedimentary Rock)

Coral Fossil (Fossilized Coral)

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

Sandstone (Calcareous/Lithic)

Sedimentary Rock (Clastic Sandstone with Calcium Carbonate cement)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Polished orbicular jasper (likely ocean jasper)

Silicified microcrystalline quartz/chalcedony with iron-oxide-rich orbicules; commonly called Ocean Jasper

Ironstone (likely Ferruginous Siltstone/Sandstone)

Ferruginous sedimentary rock (FeOx-rich clastic)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Limestone (CaCO3)

Belemnite Fossil

Belemnitida (Order of extinct cephalopods)

Trilobite Fossil (Flexicalymene)

Flexicalymene ouzregui

Fossiliferous Limestone

Biogenic Sedimentary Rock (primarily CaCO3 with fossil fragments)

Iridescent Ammonite Fossil

Ammonoidea (subclass); Composition: Aragonite (Calcium Carbonate, CaCO3) often replaced by Calcite or Pyrite

Fossilized Coral

Scleractinia (Agatized or Calcite replaced)

Limestone with Fossil Imprints

Biogenic Limestone (Calcium Carbonate, CaCO3)

Limestone

CaCO3 (Limestone)

Fossilized Shark Tooth (Carcharocles/Otodus or Sand Tiger Shark Tooth)

Elasmobranchii (Fossilized Tooth)

Limestone

Sedimentary rock composed primarily of calcium carbonate (CaCO3)

Ironstone concretion

Siderite or Limonite-rich Concretion (FeO(OH)·nH2O)

Ironstone Concretion

Ferruginous Concretion

Sandstone Concretion

Sandstone (Sedimentary rock, mostly SiO2)

Ironstone Concretion

Siderite or Limonite Concretion

Petrified Coral Fossil

Rugose or Tabulate Coral (Hexagonaria or similar fossilized cnidarian)

Echinoid Fossil (Fossilized Sea Urchin)

Echinoidea

Shale

Fissile mudstone (Shale)

Sandstone

Arenite (typically SiO2 + others)

Fossiliferous Limestone (Coquina / Shell Conglomerate)

Bioclastic Limestone (composed primarily of CaCO3)

Sandstone Pebble

Arenite (primarily SiO2)

Limestone

Limestone (Calcium Carbonate - CaCO3)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (SiO2 primarily)

Sandstone or Mudstone

Sedimentary Rock (Sandstone/Mudstone)

Sandstone

Arenite (SiO2 primarily)

Sandstone (Quartzose)

Arenite (SiO2 based)

Gastropod Fossil

Class Gastropoda (fossilized)

Limestone

Calcium Carbonate (CaCO3)