Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3)
sedimentary
Category
Organic Specimen (Fossil)
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Limestone with Calcite Veining
Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Marine invertebrate fossils (Brachiopods and Gastropods)
Phylum Brachiopoda and Class Gastropoda
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Coral Fossil (Agatized Coral or Petoskey Stone)
Hexagonaria percarinata (if Petoskey) or generally Scleractinia (Agatized Coral)
Sedimentary/Fossil
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
metamorphic
Fossil Coral
Phylum Cnidaria / Scleractinia
fossil
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
sedimentary
Fossil Coral
Scleractinia (fossilized calcium carbonate)
sedimentary
Fossilized Coral
Rugosa / Scleractinia (Agatized or Calcitized Coral)
fossil
Fossilized Dinosaur Bone
Perineralized Bone (Fluorapatite/Quartz replacement)
fossil
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Fossiliferous Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Sandstone (Iron-stained)
Clastic sedimentary rock (SiO2 with Fe2O3 staining)
sedimentary
Petrified Wood
Silicified Wood (mainly Quartz / SiO2)
fossil
Amber
Succiniferous fossil resin (C10H16O)
mineral
Fossiliferous Limestone (Crinoid stem fragment)
Crinoidea (Phylum Echinodermata) in Calcite matrix
fossil
Polished septarian nodule
Calcite–aragonite–barite septarian concretion, commonly in a claystone or limestone matrix
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossilized Coral / Fossiliferous Limestone
Anthozoa fossil in Limestone (CaCO3)
fossil
Likely weathered fossil shell or fossiliferous limestone
Indeterminate molluscan fossil, possibly a bivalve or brachiopod preserved in carbonate rock
fossil
Fossil crinoid stem segment (columnal)
Crinoidea; commonly preserved as calcite ossicles, often called entrocrinite
fossil
Dinosaur Bone (Petrified/Agatized)
Permineralized Dinosauria Bone (Silicate Replacement)
fossil
Ironstone Concretion
Siderite or Goethite Concretion
sedimentary
Limestone with Lichen
Calcium Carbonate (CaCO3) with Endolithic/Epilithic Lichen
sedimentary
Fossilized turtle shell fragment
Testudines indeterminate; shell bone permineralized with silica/carbonate minerals
fossil
Petrified Wood
Silicified Wood (SiO2)
mineral
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossilized oyster or other bivalve shell
Calcitic bioclast, commonly Ostrea spp. or Exogyra spp.
fossil
Fossilized oyster or bivalve shell
Fossil Gryphaeidae or Ostreoidea; calcitic shell, CaCO₃
fossil
Amber
Succinite (Fossilized Resin)
gemstone
Siltstone Concretion
Carbonate-cemented Siltstone Concretion
sedimentary
Petrified Wood
Silicified Wood (SiO2 permineralization)
fossil
Fossiliferous Limestone (Crinoidal Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossil Coral
Rugosa or Tabulata coral fossil (Calcite/Silica replacement)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossiliferous Limestone / Petoskey Stone (Coral Fossil)
Hexagonaria percarinata / Calcite (CaCO3)
fossil
Amber
Succinite / Fossilized Tree Resin
fossil