Dinosaur Bone
Agatized Dinosaur Bone
sedimentary/fossil
Category
Mineralized Fossil
Browse mineralized fossil specimens identified by the Rock Identifier community.
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Fossiliferous Limestone
Fossiliferous Limestone
sedimentary
Crinoidal Limestone
Bioclastic Limestone
Sedimentary
Fossilized Coral
Anthozoa (Fossilized)
Sedimentary / Fossil
Fossiliferous Limestone (Coquina / Shell Limestone)
Bioclastic Limestone (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Siderite Concretion
Ironstone (Siderite) Concretion, FeCO3
sedimentary
Chert (with possible fossils)
Microcrystalline quartz (SiO2)
sedimentary
Calamites
Calamites (Pith cast fossil)
sedimentary
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Fossilized Coral (Petoskey Stone or Rugose Coral)
Antophyllum (Hexagonaria) or Scleractinia (CaCO3)
sedimentary
Coal (Anthracite or Bituminous)
Carbon (C) with varying hydrocarbon and mineral impurities
sedimentary
Fossilized Horn Coral
Rugosa
fossil
Limestone with Secondary Mineralization
Calcium Carbonate (CaCO3)
sedimentary
Fossil Coral
Scleractinia (fossilized calcium carbonate)
sedimentary
Ammonite Fossil
Ammonoidea (primarily composed of Calcite, CaCO3)
sedimentary
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Ammonite Fossil
Ammonoidea (Calcium carbonate or Pyrite replacement)
sedimentary
Ammonite Fossil
Ammonoidea (Calcium carbonate or Pyrite replaced)
sedimentary
Belemnite Fossil
Belemnitida (Order within Cephalopoda)
sedimentary
Fossil Coral
Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)
sedimentary
Trilobite Fossil
Trilobita (Class), likely Phacopid or Asaphid order
sedimentary
Ammonite Fossil
Ammonoidea (typically preserved as Calcite or Aragonite)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Red)
Arenite (composed primarily of SiO2)
sedimentary
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Dendritic Siltstone (or Mudstone)
Siltstone with Manganese Oxide dendrites
sedimentary
Siltstone with iron staining
Siltstone (primarily SiO2 with FeO(OH) coatings)
sedimentary
Turritella Agate (Fossiliferous Chert)
Silicified Elimia tenera (Fossiliferous Chalcedony)
sedimentary
Rugose Coral (Horn Coral)
Order Rugosa (extinct fossilized coral)
sedimentary
Fossilized Coral (Favosites)
Favosites (Extinct Tabulate Coral)
sedimentary
Fossilized Coral (Petoskey Stone or similar Hexagonaria variant)
Hexagonaria percarinata (Fossilized Coral)
sedimentary
Fossilized Rugose Coral (Petoskey Stone precursor)
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Crinoid Columnal Fossil
Class Crinoidea (Echinodermata); usually calcite replacement (CaCO3)
sedimentary
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3)
sedimentary