Petrified Wood
Silicified Wood (SiO2)
metamorphic
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Fossil) in the encyclopedia
View all →
Cone-in-cone structure (Limestone)
Cone-in-cone structure (Secondary Sedimentary Structure)
sedimentary
Favosite Fossil (Calyx or Rugose Coral)
Favosites (Extinct Tabulate Coral)
sedimentary
Sandstone with Quartz Vein
Quartz-cemented quartz arenite
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Dinosaur Bone (Gembone)
Petrified Dinosaur Bone (Apatite/Silica replacement)
sedimentary
Gastropod Fossil (Snail Internal Mold)
Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)
sedimentary
Fossilized Coral (Petoskey Stone / Favosites)
Favosites (extinct genus of tabulate coral)
sedimentary
Petrified Wood
Silicon Dioxide (SiO2) - Calcified / Silicified Wood
sedimentary
Favosites Fossil (Honeycomb Coral)
Favosites (Extinct genus of Tabulate Coral)
sedimentary
Horn Coral Fossil
Rugosa (Order Rugosa)
sedimentary
Pyrite
Iron sulfide (FeS2)
mineral
Fossiliferous limestone
Bioclastic limestone, chiefly calcite (CaCO₃), with fossil shell or coral fragments
sedimentary
Sandstone Pebble
Arenite (Clastic Sedimentary Rock)
sedimentary
Rugose Coral Fossil
Order Rugosa
fossil
Sandstone
Clastic Sedimentary Rock
sedimentary
Fossilized Crinoid Stem Segment
Crinoid (Phylum Echinodermata, Class Crinoidea)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Dendritic Siltstone
Siltstone with Manganese Dendrites (MnO2)
sedimentary
Fossil bone fragment
Fossilized vertebrate bone; exact taxon undetermined
fossil
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Chert (variably Oolitic or Fossiliferous)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Fossilized bivalve or ammonite fragment
Calcareous fossil; likely a mollusk shell preserved as calcite (taxonomic identification uncertain)
fossil
Fossilized Bored Limestone
Limestone with Ichnofossils (Gastrochaenolites or Entobia)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone (Riprap)
Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Limestone (Hash)
Bioclastic Grainstone / Calcarenite
fossil
Chert (with possible fossils)
Microcrystalline quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Weathered limestone or calcareous fossil fragment
Calcite-rich carbonate rock (CaCO₃), possibly fossiliferous limestone
sedimentary
Petrified Wood
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
fossil
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 dominated)
sedimentary
Sandstone
Sandstone (Arenite)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Inclusions
sedimentary
Fossil-bearing limestone or sandstone slab
Indeterminate carbonate/clastic sedimentary rock; visible structures may be fossil fragments or bedding features
fossil
Sandstone
Arenite
sedimentary
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
sedimentary