Turritella Fossil
Turritella (Class Gastropoda, Family Turritellidae)
fossil
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
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Sandstone with Trace Fossils
Quartz Arenite with Bioturbation (Trace Fossils)
sedimentary
Coal
Bituminous Coal / Anthracite
sedimentary
Fossilized Sea Urchin (Echinoid)
Echinoidea (Class) - likely replaced by Calcite or Quartz
sedimentary
Fossil Shell Fragment (possibly Brachiopod or Bivalve)
Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca
sedimentary
Crinoid Fossil in Limestone
Crinoidea (class) in Fossiliferous Limestone
fossil
Bivalve Fossil (Clam/Mollusk)
Class: Bivalvia (Order: Veneroida), Calcium Carbonate (CaCO3)
sedimentary
Ironstone Concretion
Ironstone (Limonite/Goethite/Hematite mixture)
sedimentary
Fossiliferous Chert or Limestone
Sedimentary rock containing fossilized marine invertebrates (likely crinoid stems or bryozoans)
sedimentary
Weathered chert or silicified limestone nodule
Microcrystalline quartz (SiO₂), possibly replacing limestone; exact identification requires testing
sedimentary
Fossilized Brachiopod in Limestone
Phylum Brachiopoda embedded in sedimentary limestone
fossil
Crinoid Fossil Fragment
Crinoidea (echinoderm fossil embedded in limestone/matrix)
fossil
Ironstone Concretion
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or similar Lamniformes
fossil
Seashell Fossil
Invertebrate Bivalve / Gastropod Fossil (Calcium Carbonate, CaCO3)
fossil
Bivalve Fossil
Bivalvia (Phylum Mollusca)
Fossil
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3 with fossil fragments)
sedimentary
Trace Fossil (Lichenandites or Rhynie Chert Chert with Microfossils)
Trace fossil in microcrystalline quartz (SiO2)
fossil
Sandstone
Arenite
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide Fe2O3 cement)
sedimentary
Chert (Nodule)
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Limestone
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Limestone with Fossil
Sedimentary limestone, calcium carbonate (CaCO3)
sedimentary
Seashell (Cone Snail Shell)
Conus sp. (Calcium Carbonate, CaCO3)
fossil
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Sandstone (with Iron Staining)
Arenite
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Coarse Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Rugose Coral Fossil
Order Rugosa
fossil
Crinoid Stem Fossil (in matrix)
Crinoid (Class Crinoidea)
sedimentary
Fossil Sea Urchin (Echinoid)
Echinoidea fossil (often replaced by silica or calcite)
fossil
Mosasaur Tooth
Mosasaurus sp.
fossil
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Lepidodendron Fossil (Scale Tree)
Lepidodendron
fossil
Ammonite Fossil (Iridiscent)
Ammonoidea (subclass)
fossil