Petrified Wood
Siliconized Wood (SiO2)
sedimentary
Category
Fossil
Browse fossil specimens identified by the Rock Identifier community.
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
sedimentary
Orthoceras Fossil
Orthoceras regulare
fossil
Trilobite fossil
Fossilized trilobite; exact genus/species indeterminate
fossil
Stromatolite Fossil
Stromatolite (Cyanobacteria biogenic sedimentary structure)
fossil
Ammonite Fossil
Ammonoidea
fossil
Fossil Coral
Hexagonaria or Rugose Coral (petoskey stone / fossilized rugose or tabulate coral)
fossil
Fossil Coral
Hexagonaria / Rugose coral (Fossilized calcium carbonate)
fossil
Fossil Coral
Hexagonaria or similar rugose/tabulate coral fossil (Calcium Carbonate, CaCO3)
fossil
Fossil Coral
Rugosa or Tabulata coral fossil (Calcite/Silica replacement)
fossil
Fossil Coral
Scleractinia (Fossilized Hexacoral)
fossil
Limestone with Fossil
Sedimentary limestone, calcium carbonate (CaCO3)
sedimentary
Belemnite Fossil
Belemnitella sp. (rostrum)
fossil
Fossil Coral
Hexagonaria or Rugose coral fossil (replaced by silica/chalcedony)
fossil
Gastropod Fossil
Class Gastropoda (fossilized)
fossil
Fossil Coral
Anthozoa (Scleractinia)
fossil
Coral Fossil
Scleractinia (Class Anthozoa)
fossil
Ammonite Fossil
Ammonoidea (subclass)
fossil
Gastropod Fossil
Phylum Mollusca, Class Gastropoda
fossil
Coral Fossil
Anthozoa (Scleractinia)
fossil
Calamites fossil
Calamites (extinct genus of arborescent horsetails)
fossil
Brachiopod Fossil
Phylum Brachiopoda (poss. Order Spiriferida or Rhynchonellida)
fossil
Brachiopod Fossil
Brachiopoda (Phylum); often Atrypa or Mucrospirifer genus depending on locality
fossil
Fossil Coral
Tabulate Coral (potentially Favosites or Calapoecia)
fossil
Murex Fossil
Muricidae (Calcium Carbonate fossilization)
fossil
Ammonite Fossil
Ammonoidea (primarily composed of Calcite, CaCO3)
sedimentary
Fossil Coral
Scleractinia (fossilized calcium carbonate)
sedimentary
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Belemnoit (Fossil)
Belemnoidea (Order), Rostrum / Guard
sedimentary
Ammonite Fossil
Ammonoidea (Calcium carbonate or Pyrite replacement)
sedimentary
Ammonite Fossil
Ammonoidea (Calcium carbonate or Pyrite replaced)
sedimentary
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Belemnite Fossil
Belemnitida (Order within Cephalopoda)
sedimentary
Ammonite Fossil
Ammonoidea (typically preserved as Calcite or Aragonite)
sedimentary
Fossil Coral
Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)
sedimentary
Trilobite Fossil
Trilobita (Class), likely Phacopid or Asaphid order
sedimentary
Fossiliferous Flint / Chert
Microcrystalline quartz (SiO2) with embedded invertebrate fossils
sedimentary
Crinoidal Limestone
Fossiliferous Limestone containing Crinoid stem fragments (Echinodermata)
fossil
Fossiliferous Limestone with Crinoid Stem
Bioclastic Limestone (CaCO3)
sedimentary
Fossilized bone or tooth fragment (indeterminate vertebrate fossil)
Mineralized vertebrate skeletal material; commonly apatite, Ca₅(PO₄)₃(F,Cl,OH), partly replaced by silica or calcite
fossil
Likely fossilized coral fragment
Rugose or tabulate coral fossil; exact taxon indeterminate
fossil
Fossiliferous Limestone
Limestone (CaCO3 with Bioclasts)
sedimentary