Limestone
Calcium Carbonate (CaCO3)
sedimentary
Category
Sedimentary (Fossiliferous)
Browse sedimentary (fossiliferous) specimens identified by the Rock Identifier community.
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Fossiliferous Limestone
Calcium Carbonate (CaCO3) with marine fossils
fossil
Limestone (Fossiliferous)
Calcium Carbonate (CaCO3)
sedimentary
Coquina
Biogenic calcarenite / Coquina (CaCO3)
sedimentary
Fossiliferous Flint / Chert
Microcrystalline quartz (SiO2) with embedded invertebrate fossils
sedimentary
Fossiliferous Limestone
Calcite-rich sedimentary rock with invertebrate fossils (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Shale
Sedimentary Clastic Rock with fossil inclusions (likely Brachiopod or Bivalve impressions)
fossil
Fossil Bivalve Shell
Class Bivalvia (e.g., Veneriidae family)
sedimentary
Fossiliferous Limestone
Bioclastic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Glauconitic Sandstone (Greensand)
Glauconitic quartz wacke or arenite
sedimentary
Limestone with Fossil Fragments
Bioclastic Limestone (CaCO3)
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Limestone (Fossiliferous)
Calcium Carbonate (CaCO3) - Bioclastic Limestone
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcite, CaCO3)
sedimentary
Fossil Assortment and Geological Specimens
Various (including Ammonoidea)
fossil
Fossiliferous Limestone / Fossil Fragment
Calcium Carbonate Matrix with Biogenic Inclusions (CaCO3)
fossil
Fossiliferous Limestone
Calcium Carbonate (CaCO3) - Limestone
sedimentary
Fossiliferous Sedimentary Rock (Coquina/Limestone)
Fossiliferous Calcarenite / Bioclastic Limestone
sedimentary
Brain Coral Fossil
Family Mussidae or Merulinidae (Order Scleractinia)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Fossilized Nut / Coprolite / Concretion
Trace Fossil / Permineralized Plant Material
fossil
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
fossil
Sandstone (Ferruginous Concretion)
Arenite (with iron oxide cement)
sedimentary
Fossiliferous Limestone
Limestone with embedded fossil cross-section
sedimentary
Weathered limestone fragment
Limestone, predominantly calcite (CaCO₃)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Limestone containing marine invertebrate fossils
sedimentary
Augite Shell / Turret Snail Fossil (or Recent Seashell)
Gastropoda (Class) / Turritellidae (Family)
fossil
Dinosaur Fossil Tooth
Vertebrate Fossilized Tooth
fossil
Marine invertebrate fossils (Brachiopods and Gastropods)
Phylum Brachiopoda and Class Gastropoda
fossil
Chert / Fossiliferous Limestone
Sedimentary Chert (often containing CaCO3 or SiO2 replacements)
sedimentary
Bivalve Fossil (Clam)
Class Bivalvia (e.g., Mercenaria or similar genus), composed of CaCO3 (Aragonite/Calcite)
fossil
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone (Coquina)
Calcite (CaCO3) with Bioclastic inclusions
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Inclusions
sedimentary
Fossiliferous limestone
Bioclastic limestone, composed mainly of calcite (CaCO₃)
sedimentary
Fossiliferous Sandstone
Sedimentary rock containing invertebrate fossils
fossil
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary