Belemnite (Fossilized Rostrum)
Belemnitida (Order), composed of Calcite (CaCO3)
sedimentary
Category
Sedimentary (Fossilized Organic Remain)
Browse sedimentary (fossilized organic remain) specimens identified by the Rock Identifier community.
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Fossilized Rugose Coral
Rugosa (Order Rugosa, typically fossilized in Limestone)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or similar Lamniformes
fossil
Fossilized Shark Teeth in Matrix
Cretaceous Chondrichthyes (Shark) remains in Sedimentary Matrix
fossil
Quartzite with Dendritic Manganese Oxide Inclusions
Metamorphic Quartzite (SiO2 with Mn-oxides)
metamorphic
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Echinoid Fossil / Fossilized Sea Urchin
Echinoidea
fossil
Fossilized Shark Tooth (Fragment) in Matrix
Elasmobranchii (subclass)
fossil
Fossilized Gastropod Steinkern
Class Gastropoda internal mold
fossil
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Order: Rugosa)
sedimentary
Petoskey Stone
Hexagonaria percarinata
sedimentary
Fossil Coral (Petoskey-style Rugose Coral)
Hexagonaria percarinata (Order: Rugosa)
sedimentary
Travertine
Calcareous Tufa (CaCO3)
sedimentary
Quartzite (Water-Worn)
Quartzite (SiO2)
metamorphic
Quartzite Cobble
Metamorphic Quartz-rich Rock (SiO2)
metamorphic
Fossilized Bored Limestone
Limestone with Ichnofossils (Gastrochaenolites or Entobia)
sedimentary
Fossilized Rugose Coral
Order Rugosa (Calcium Carbonate - CaCO3)
sedimentary
Fossilized Shark Tooth
Fossilized Elasmobranchii tooth (likely Odontaspis or Carcharias)
sedimentary
Dinosaur Bone (Fossilized)
Permineralized Bone (CaCO3 or SiO2 after Hydroxylapatite)
sedimentary
Fossilized Knightia Fish
Knightia eocaena (set in fossiliferous Micritic Limestone)
sedimentary
Fossilized Bone Fragment
Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)
sedimentary
Calamites (Fossilized Horsetail)
Calamites suckowii (Family: Calamitaceae)
sedimentary
Fossilized Gastropod Shell
Gastropoda (Class)
sedimentary
Fossilized Crinoid Stem
Class Crinoidea (Echinodermata)
sedimentary
Fossilized bivalve shell
Bivalvia indeterminate; likely a fossil cockle or clam shell, aragonite/calcite replaced or preserved
fossil
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Crinoid Stem Fossil
Class Crinoidea (Sea Lilies)
sedimentary
Fossilized Blastoid (Sea Bud)
Pentremites sp. (Echinodermata, Blastoidea)
fossil
Ammonite Fossil
Ammonoidea (subclass)
fossil
Brachiopod Fossil
Phylum Brachiopoda (Class Rhynchonellata)
sedimentary
Fossilized Limestone with Crinoid Stem
Carboniferous Limestone (containing Crinoidea ossicles)
fossil
Calamites Fossil (Horsetail Stem)
Calamites (Genus), part of the class Equisetopsida
sedimentary
Lava Rock with Fabric Impression
Scoria or Basalt with anthropogenic impressions
igneous
Fulgurite
Lechatelierite (Silica glass tubes)
mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Fossilized Shark Tooth (Fragment)
Elasmobranchii gen. et sp. indet.
fossil
Petoskey Stone (Fossilized Coral)
Hexagonaria percarinata (CaCO3)
sedimentary
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Chondrite Meteorite
Ordinary Chondrite (S-type Asteroid fragment)
mineral
Likely fossilized shell or carbonate concretion
Indeterminate biogenic calcium carbonate, commonly calcite (CaCO₃)
fossil
Granite Glacial Erratic
Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 – SiO2)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral