Fossiliferous Limestone
Biogenic Limestone (CaCO3)
sedimentary
Category
Mineralized Fossil
Browse mineralized fossil specimens identified by the Rock Identifier community.
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Foliated Metamorphic Rock (primarily composed of Muscovite, Chlorite, and Quartz)
metamorphic
Coal (Bituminous or Anthracite)
Carbonaceous sedimentary rock (primarily Carbon, C)
sedimentary
Orthoceras Fossil Limestone
Orthoceras sp. (Calcium Carbonate, CaCO3)
sedimentary
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Limestone with Fossil Inclusion
Calcium Carbonate (CaCO3)
sedimentary
Bivalve Shell (Fossil or Contemporary)
Class Bivalvie (various genera and species of clams, cockles, etc.)
Sedimentary (Biogenic sediment or biological remain)
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Dendritic Quartz Pebble
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Desert Rose (Baryte or Selenite variant)
Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions
mineral
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz grains)
sedimentary
Coquina / Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Brachiopod Fossil in Limestone
Phylum Brachiopoda (likely Order Spiriferida), CaCO3 (Calcite)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (typically SiO2 + others)
sedimentary
Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Fossilized Shark Tooth
Carcharocles or Otodus sp. (Micro-fossilized)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Coarse Sandstone
Arenite (SiO2 based)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossil Coral (Favosites Honeycomb)
Favosites (Genus), Phylum Cnidaria, Class Anthozoa
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Ammonite Fossil
Ammonitida (Extinct subclass of Cephalopoda)
sedimentary
Fossilized Bored Limestone
Limestone with Ichnofossils (Gastrochaenolites or Entobia)
sedimentary
Fossiliferous Limestone (with Coralline Inclusions)
Calcium Carbonate (CaCO3)
sedimentary
Mosasaur Jaw Fossil in Matrix
Mosasaurus (family Mosasauridae) in Phosphate Sandstone
sedimentary
Crinoid Stem Fossil
Class Crinoidea (Phylum Echinodermata), often preserved in Limestone or Calcite (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Stromatolite (Fossiliferous Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossilized Tabulate Coral (Honeycomb Coral)
Favosites (Order: Tabulata)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Fossil Shark Tooth (Cretaceous white shark type)
Squalicorax (commonly known as Crow Shark)
Organic specimen (fossil)
Fossiliferous Limestone (Coquina)
Calcite (CaCO3) with Bioclastic inclusions
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone
sedimentary