Fossiliferous Limestone
CaCO3 (with biological inclusions)
sedimentary
Category
Igneous And Fossil
Browse igneous and fossil specimens identified by the Rock Identifier community.
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Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Ammonite Fossil (Iridiscent)
Ammonoidea (subclass)
fossil
Fossil Shark Tooth
Squalicorax (likely Squalicorax pristodontus or Squalicorax falcatus)
fossil
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
fossil
Coral Fossil Rock (Syringopora)
Syringopora (Organ-pipe Coral fossil in Limestone matrix)
sedimentary
Coral Fossil (Favosites)
Favosites (Extinct genus of tabulate corals)
sedimentary
Belemnite Fossil
Belemnitida (Order of extinct cephalopods)
sedimentary
Fossilized Syringopora (Piping Organ Coral)
Syringopora (Extinct Genus of Tabulate Coral)
sedimentary
Petrified Wood
Silicified wood (SiO2 - Silicon Dioxide)
sedimentary
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
sedimentary
Fossil Shell Fragment (possibly Brachiopod or Bivalve)
Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca
sedimentary
Fossilized Sea Urchin (Echinoid)
Echinoidea (Class) - likely replaced by Calcite or Quartz
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
mineral
Fossilized Favosites (Honeycomb Coral)
Favosites (extinct genus of tabulate coral)
sedimentary
Trilobite Fossil (Flexicalymene)
Flexicalymene ouzregui
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of organic matter)
fossil
Fossilized Coral in Chert
Anthozoa (Class) fossil in Cryptocrystalline Quartz (SiO2)
fossil
Fossiliferous Limestone (Crinoidal Limestone)
Bioclastic grainstone (CaCO3)
sedimentary
Bivalve Fossil (Fossilized Shell)
Class Bivalvia (fossilized in Calcium Carbonate/Aragonite)
fossil
Fossilized Tooth Fragment
Vertebrate Fossil (Mammalia indet.)
fossil
Fossiliferous Limestone (Coquina-like)
Biogenic Limestone
sedimentary
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
sedimentary
Limestone
CaCO3 (principally Calcite)
sedimentary
Coquina
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Silicified Snail Fossil
Gastropod (likely replaced by Chalcedony/Quartz - SiO2)
fossil
Fossiliferous Limestone (Crinoidal)
Crinoid Limestone (CaCO3 with fossil biological remains)
sedimentary
Fossilized Shell in Limestone
Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock
sedimentary
Belemnoit (Fossil)
Belemnoidea (Order), Rostrum / Guard
sedimentary
Fossiliferous Limestone with Crinoid stems
Calcite-rich Biogenic Sedimentary Rock (CaCO3)
sedimentary
Marine invertebrate fossils (Brachiopods and Gastropods)
Phylum Brachiopoda and Class Gastropoda
fossil
Fossil Shark Tooth
Selachimorpha (Chondrichthyes dental fossil)
sedimentary
Turritella Agate
Elimia tenera silicified fossiliferous chalcedony
fossil
Fossil Shark Tooth (Sand Tiger Shark type)
Carcharias sp. (likely Odontaspis)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossil Shark Tooth
Carcharocles or Lamniformes (order)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Coral Fossil (Scleractinia)
Scleractinia (Order), primarily CaCO3 (Aragonite or Calcite)
sedimentary