Fossil Coral
Scleractinia (fossilized calcium carbonate)
sedimentary
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Fossil) in the encyclopedia
View all →
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Ammonite Fossil
Ammonoidea (Calcium carbonate or Pyrite replaced)
sedimentary
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Ammonite Fossil
Ammonoidea (typically preserved as Calcite or Aragonite)
sedimentary
Fossil Coral
Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)
sedimentary
Trilobite Fossil
Trilobita (Class), likely Phacopid or Asaphid order
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Sandstone with Brachiopod Mold Fossil
Sedimentary rock (Sandstone) with indeterminate Brachiopod mold
fossil
Petrified Wood
Silicified wood (SiO2)
fossil
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Fossilized Rugose Coral
Order Rugosa (Calcium Carbonate - CaCO3)
sedimentary
Fossilized Bone Fragment
Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)
sedimentary
Fossilized Coral (Petoskey Stone or similar)
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Fossilized Shell in Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossil Shark Tooth
Carcharodon sp. (likely Otodus or similar Lamniformes order)
sedimentary
Likely calcite-rich limestone or marble fragment
Calcite (CaCO₃), probably micritic limestone; exact identification requires testing
sedimentary
Crinoid Stem Fossil
Crinoid (Class Crinoidea)
fossil
Fossil Shell in Sedimentary Matrix
Bivalvia (fossil) in Calcium Carbonate Matrix
sedimentary
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
mineral
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3)
sedimentary
Shale
Mudstone (composed primarily of clay minerals like kaolinite, illite, and smectite, with quartz and calcite)
sedimentary
Fossiliferous Limestone with Brachiopods
Calcium Carbonate (CaCO3) with fossilized Brachiopoda sp. (likely Order Spiriferida or Rhynchonellida)
sedimentary
Limestone
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Ammonite Fossil
Ammonoidea
fossil
Sandstone
Arenite (SiO2 primarily)
sedimentary
Weathered limestone or calcareous sandstone
Calcite-dominated carbonate rock, likely micritic limestone (CaCO₃)
sedimentary
Fossilized Sand Dollar
Echinoidea (Clypeasteroida)
fossil
Fossiliferous Limestone with Crinoid stems
Calcite-rich Biogenic Sedimentary Rock (CaCO3)
sedimentary
Limestone
CaCO3 (principally Calcite)
sedimentary
Shark Tooth Fossil
Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)
fossil
Sandstone
Arenite (SiO2 based)
sedimentary
Fossil Shark Tooth
Chondrichthyes dentition (Fossilized Tooth)
fossil
Fossil Coral
Hexagonaria / Rugose coral (Fossilized calcium carbonate)
fossil
Fossil Coral
Rugosa or Tabulata coral fossil (Calcite/Silica replacement)
fossil
Belemnite Fossil
Belemnitella sp. (rostrum)
fossil
Polished fossiliferous agate
Chalcedony (microcrystalline SiO₂), likely containing fossil coral or stromatoporoid structures
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with fossil inclusions
sedimentary
Fossil-bearing fine-grained sedimentary rock
Likely fossiliferous mudstone or shale; visible feature may be a plant fragment, trace fossil, or mineral vein
fossil
Sandstone
Arenite
sedimentary
Crinoid Stem Fossil (in matrix)
Crinoid (Class Crinoidea)
sedimentary