Fossilized Bone Fragment
Petrified Osseous Material
fossil
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
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Rugose Coral (Horn Coral) Fossil
Order Rugosa (likely Grewingkia or Zaphrentis genus)
fossil
Mammoth or Mastodon Tooth Fossil
Proboscidea tooth (Mammuthus or Mammut)
fossil
Fossil Shark Tooth
Otodus sp. (likely Otodus obliquus) fossil
fossil
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Crinoid Stem Fossil
Crinoida (columnal ossicles)
fossil
Rugose Coral Fossil (Horn Coral)
Order Rugosa
fossil
Crinoid Stem Fossil
Class Crinoidea (Echinodermata)
fossil
Fossilized Shark Tooth or Bone Fragment
Vertebrate Fossil (likely Carcharodon or similar genus)
fossil
Fossilized Favosites Coral (Honeycomb Coral)
Favosites (extinct genus Table Coral)
fossil
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Chert (Hagstone/Adder Stone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Fossiliferous Limestone (Coral Fossil)
Calcium Carbonate (CaCO3) with Colonial Coral inclusions
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Weathered sandstone or arkosic sandstone
Clastic sandstone, likely quartz–feldspar-rich (arkose)
sedimentary
Sandstone
Arenite (primarily SiO2 with iron oxide cementation)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (often composed of Quartz, SiO2)
sedimentary
Crinoid Stem Fossil
Crinoid columnal (Echinodermata)
fossil
Fossilized Horn Coral
Rugosa (Rugose coral)
fossil
Fossil Coral (Tabulate Coral Fragment)
Anthopleura / Tabulata (CaCO3 - Calcium Carbonate)
fossil
Fossiliferous Limestone
Calcium carbonate (CaCO3) with marine fossils
sedimentary
Limestone
Sedimentary Rock (Primarily CaCO3)
sedimentary
Siltstone
Siltstone (Detrital Sedimentary Rock)
sedimentary
Chert (Fossiliferous)
Silicon Dioxide (SiO2)
sedimentary
Rounded brown pebble, likely weathered sandstone or iron-stained quartzite
Probable quartz-rich sandstone (SiO₂-dominated); exact identification requires testing
sedimentary
Flint (chert), possibly fossil-bearing
Microcrystalline quartz (SiO₂), chalcedony/flint variety
sedimentary
Sandstone (with Laminations)
Clastic sedimentary rock (primarily Quartz-based)
sedimentary
Sandstone (likely Arkosic)
Arenite (SiO2 based)
sedimentary
Yellow Ocherous Siltstone (Limonitic Shale)
Limonitic Siltstone / Goethite-rich Sedimentary Rock
sedimentary
Limestone
Limestone (Calcium Carbonate - CaCO3)
sedimentary
Sandstone with Ironstone Concretion
Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))
sedimentary
Flint / Chert with Fossils
Cryptocrystalline quartz (SiO2) with embedded fossil impressions
sedimentary
Coral Fossil (Petrified Coral)
Scleractinia (Order) - Calcified Fossil Skeleton (CaCO3)
sedimentary
Fossilized Bone Fragment
Permineralized Vertebrate Fossil (Hydroxyapatite replaced by Minerals)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclastic Inclusions
sedimentary