Oyster Shell (Biogenic Calcium Carbonate)
Crassostrea virginica (or related species) - Calcium Carbonate (CaCO3)
sedimentary
Category
Sedimentary (Fossiliferous)
Browse sedimentary (fossiliferous) specimens identified by the Rock Identifier community.
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Fossiliferous Limestone
Calcite (CaCO3) matrix with biogenic fragments
sedimentary
Fossiliferous Limestone
Biomicrite / Fossiliferous Limestone (CaCO3)
fossil
Fossiliferous Limestone
CaCO3 (with biological inclusions)
sedimentary
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Fossiliferous Carbonate Rock (CaCO3)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclasts
sedimentary
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Limestone with Fossil Imprints
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Fossils
sedimentary
Fossiliferous Limestone
Calcium carbonate (CaCO3) with marine fossils
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Shark Tooth
Chondrichthyes (class)
fossil
Turritella (Gastropod Fossil)
Turritella (Genus of gastropods), CaCO3 (Calcium Carbonate or Silicified Agate)
sedimentary
Limestone (Fossiliferous)
Sedimentary Carbonate Rock (CaCO3)
sedimentary
Fossiliferous Limestone
Limestone with fossil bioclasts (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous limestone
Calcite-rich limestone (CaCO₃), containing possible fossil or peloidal inclusions
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone (containing bioclasts)
sedimentary
Fossiliferous Limestone
Fossiliferous Calclutite / Bio-calcarenite (CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Sandstone / Mudstone
Sedimentary Rock (Clastic with Fossiliferous Inclusions)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3 with fossil fragments)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Fragments
sedimentary
Fossiliferous limestone
Calcite-rich limestone (CaCO₃), containing fossil shell or coral fragments
sedimentary
Fossils in Limestone (Crinoid / Marine Invertebrate Fossil)
Fossiliferous Limestone (containing Crinoidea / Brachiopoda)
fossil
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Calcareous Sedimentary Rock (CaCO3)
sedimentary
Fossiliferous Limestone
Calcite-rich Fossiliferous Limestone (CaCO3)
sedimentary
Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3) with bioclasts
sedimentary
Fossiliferous Sandstone with Blastoid / Crinoid Fossil
Echinodermata (Crinoid stem or Blastoid species in Sandstone)
fossil
Fossiliferous Limestone
Calcium Carbonate - CaCO3
sedimentary
Fossiliferous Chert
Silicon Dioxide (SiO2) with fossil inclusions
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3 with organic inclusions)
fossil
Fossiliferous limestone
Calcarenite/bioclastic limestone, predominantly calcite (CaCO₃)
sedimentary
Fossiliferous Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Fossiliferous)
Arenite / Clastic Sedimentary Rock
sedimentary