Fossilized Shark Tooth in Matrix
Otodus sp. (likely Otodus obliquus)
sedimentary
Category
Sedimentary (Fossilized Organic Matter)
Browse sedimentary (fossilized organic matter) specimens identified by the Rock Identifier community.
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Trilobite Fossil in Limestone
Trilobita (Class), likely embedded in fossiliferous limestone (CaCO3)
fossil
Red Siltstone (or Red Shale)
Clastic Sedimentary Rock (Composition: primarily Quartz, Clay minerals, and Hematite Fe2O3)
sedimentary
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Favosites (Honeycomb Coral Fossil)
Favosites (Genus of extinct tabulate coral)
sedimentary
Sea Shell (Mollusk Shell)
Calcium Carbonate (Aragonite/Calcite)
fossil
Fossilized Bryozoan
Bryozoa
fossil
Fossilized Coral
Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)
fossil
Fossilized Coral
Scleractinia (Agatized or Calcite replaced)
fossil
Fossilized Brachiopod
Brachiopoda (Phylum), likely Order Spiriferida or Rhynchonellida
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Fossilized Crinoid Stem in Limestone
Crinoidea (Class) in Calcium Carbonate (CaCO3) matrix
fossil
Mookaite Jasper
Radiolarite (Silica-rich sedimentary rock featuring Hematite and Goethite)
sedimentary
Pyrite
Pyrite (Iron sulfide, FeS₂)
mineral
Coral Fossil / Coral Fragment
Scleractinia / Calcium Carbonate (CaCO3)
fossil
Fossilized Gastropod Internal Mold
Steinkern (Mollusca: Gastropoda)
sedimentary
Shiva Eye Shell Fossil (Operculum)
Turbo marmoratus (Operculum)
fossil
Honeycomb Coral Fossil (Petoskey-type Coral)
Favosites (Extinct Colonial Tabulate Coral), CaCO3
sedimentary
Fossilized Echinoid (Sea Urchin)
Echinoidea (Class)
sedimentary
Fossilized Angel Wing Shell
Cyrtopleura costata
sedimentary
Fossilized Brachiopod Shell in Matrix
Phylum Brachiopoda (typically Calcium Carbonate or Chitinophosphatic)
sedimentary
Fossilized Sea Urchin (Echinoid)
Echinoidea (Fossil specimen, often replaced by Calcite or Silica)
sedimentary
Fossilized Favosites (Honeycomb Coral)
Favosites (Genus), Phylum Cnidaria, Class Anthozoa
sedimentary
Conglomerate with Fossilized Shark Teeth
Clastic sedimentary rock (Conglomerate) containing Elasmobranchii remains
sedimentary
Coquina or Fossilized Shell Aggregate
Calcareous bioclastic sedimentary rock (CaCO3)
sedimentary
Coquina or Fossilized Shell Fragment
Calcium Carbonate (CaCO3) / Biogenic Limestone
sedimentary
Fossilized Favosites (Honeycomb Coral)
Favosites (extinct genus of tabulate coral)
sedimentary
Sedimentary Rock (Limestone or Siltstone pebble)
Sedimentary rock fragment
sedimentary
Fossilized Favosites (Honeycomb Coral)
Favosites (extinct genus of tabulate coral)
sedimentary
Fossilized Gastropod in Chert/Limestone
Internal mold of Gastropoda (Class) with CaCO3 or SiO2 mineral formula
sedimentary
Fossilized Solitary Rugose Coral
Order Rugosa (commonly Horn Coral)
sedimentary
Fossilized Stingray Mouth Plate
Myliobatidae dental battery
sedimentary
Fossilized Coral (Honeycomb Coral)
Favosites (extinct genus of tabulate corals), CaCO3 (Calcium Carbonate)
sedimentary
Crinaudite / Fossilized Crinoid Stem
Crinoid (Echinodermata) in a Calcitic/Siliceous Matrix
sedimentary
Fossilized Sea Urchin Spines
Echinoidea (Cidaroid spines)
sedimentary
Megalodon Shark Tooth
Otodus megalodon
fossil
Chondrite Meteorite
Ordinary Chondrite (L or H class)
meteorite
Brachiopod Fossil (Spiriferid)
Order Spiriferida (Phylum Brachiopoda); mineralized as Calcite (CaCO3) or Chert (SiO2)
sedimentary (fossilized organic remain)
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
sedimentary
Amber
Fossilized tree resin (Amorphous)
gemstone
Amber
Fossilized tree resin (C10H16O)
gemstone
Mosasaur Tooth
Mosasaurus beaugei (Fossilized Tooth)
fossil