Sand Dollar Fossil
Echinoidea (Clypeasteroida)
sedimentary
Category
Mineralized Fossil
Browse mineralized fossil specimens identified by the Rock Identifier community.
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Fossilized Shell in Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Ammonite Fossil (Polished Half / Cleoniceras)
Ammonoidea (Subclass), often Cleoniceras genus; fossilized with Calcite (CaCO3) and Aragonite
Sedimentary
Fossilized Shark Tooth (Fragment)
Elasmobranchii fossil (likely Cretalamna or Squalicorax genus)
sedimentary
Fossil Shark Tooth
Chondrichthyes dentition (Fossilized Tooth)
fossil
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
sedimentary
Ironstone Concretion
Siderite or Hematite Concretion
sedimentary
Fossilized Shark Tooth
Otodus sp. (approximate genus) / Hydroxyapatite fossil
sedimentary
Brachiopod Fossil in Limestone
Phylum Brachiopoda, Class Rhynchonellata
sedimentary
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Fossilized Shark Tooth
Fossilised Chondrichthyes dental specimen (likely Otodus or Carcharias sp.)
mineral
Coarse Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate with Fossils)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Sandstone
Arenite
sedimentary
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Fossilized Shark Tooth
Scapanorhynchus (Sand Tiger Shark relative)
sedimentary
Fossil Shell (Bivalve)
Phylum Mollusca, Class Bivalvia
fossil
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
sedimentary
Fossilized Wood / Petrified Wood
Petrified Wood (Silicified Flora)
fossil
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone (with Rugose Coral)
Limestone with Tetracoralla (Rugosa) fossil
fossil
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Dinosaur Bone
Agatized Dinosaur Bone
sedimentary/fossil
Fossiliferous Limestone (Coquina)
Calcite (CaCO3) with Bioclastic inclusions
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with marine fossils
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone
sedimentary
Crinoidal Limestone
Bioclastic Limestone
Sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)
sedimentary
Vuggy Quartz / Chert
Silicon Dioxide (SiO2)
sedimentary
Red Sandstone
Sandstone (Quartz Arenite with Iron Oxide)
sedimentary
Sandstone
Arenite
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossil shell fragment (likely brachiopod or bivalve)
Indeterminate fossilized carbonate shell; likely Brachiopoda or Bivalvia
fossil
Sandstone Pebbles
Arenite
sedimentary
Sandstone
Arenite
sedimentary