Fossilized Shell Fragment
Bivalvia or Gastropoda (Class) fragment
fossil
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
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Sandstone (Iron-stained)
Clastic sedimentary rock (SiO2 with Fe2O3 staining)
sedimentary
Fossiliferous Limestone containing a Brachiopod or Mollusk Impression
Biogenic Sedimentary Rock / Fossiliferous Limestone
sedimentary
Fossiliferous Limestone (with Crinoids/Coral)
Fossiliferous Limestone (CaCO3)
sedimentary
Sand Dollar Fossil
Echinoidea (Clypeasteroida)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Flint / Chert
Silicon Dioxide (SiO2)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
sedimentary
Shale
Shale (clastic sedimentary rock composed of silt and clay-sized particles)
sedimentary
Fossiliferous Limestone with Crinoid stems
Calcite-rich Biogenic Sedimentary Rock (CaCO3)
sedimentary
Fossilized Gastropod Shell
Gastropoda (Class)
sedimentary
Petrified Wood Fragment
Silicified Wood (SiO2)
fossil
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineralized Apatite / Bio-apatite)
fossil
Fossiliferous Sandstone / Quartzite Pebble
Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)
fossil
Sandstone
Arenite (SiO2 primarily)
sedimentary
Fossilized Bone (Petrified Bone)
Permineralized Bone Fossil
fossil
Fossilized Shell in Limestone
Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock
sedimentary
Petrified Wood
Silicified wood (SiO2)
fossil
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Brachiopod Fossil in Sedimentary Rock
Phylum Brachiopoda fossil imprint in sedimentary matrix
fossil
Sandstone
Arenite (SiO2 principal)
sedimentary
Shark Tooth Fossil
Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)
fossil
Fossil Shark Tooth
Chondrichthyes dentition (Fossilized Tooth)
fossil
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3)
sedimentary
Limestone
CaCO3 (principally Calcite)
sedimentary
Fossilized Oyster Shell
Gryphaea or Exogyra (Family Ostreidae)
fossil
Fossilized Mosasaur Tooth
Mosasauridae (likely Prognathodon or Mosasaurus)
fossil
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
mineral
Orthoceras Fossil Limestone
Orthoceras sp. (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Bivalve Fossil in Sedimentary Matrix
Fossiliferous Mudstone (Class: Bivalvia)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Sandstone (SiO2 dominated)
sedimentary
Sandstone Cobble
Arenite (Sandstone)
sedimentary
Sandstone and Mixed Rock Assemblage
Clastic Sedimentary Rock / Quartz Arenite
sedimentary
Sandstone and Gravel Aggregate
Clastic Sedimentary Rock / Quartzose Sandstone
sedimentary
Fossilized Sand Dollar
Echinoidea (Clypeasteroida)
fossil
Fossilized Bone Fragment
Vertebrate Fossil Material (Apatite/Calcium Phosphate)
fossil
Fossiliferous Limestone with Quartz Veining
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossilized Oyster Shell
Ostreidae (Calcium Carbonate - CaCO3)
fossil
Crinoid Stem Fossil
Crinoid (Class Crinoidea)
fossil
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with fossil inclusions
sedimentary