Fossilized Shark Tooth
Chondrichthyes (class)
fossil
Category
Sedimentary (Fossilized Organic Remains)
Browse sedimentary (fossilized organic remains) specimens identified by the Rock Identifier community.
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Small seashell fossil or shell fragment
Likely calcium-carbonate shell material, chiefly aragonite or calcite; exact species indeterminate
fossil
Amber
Succinite (fossilized resin)
mineral
Amber
Succiniferous fossil resin (C10H16O)
mineraloid
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)
sedimentary
Amber
Succinite (formula varies, primarily C10H16O)
Mineraloid (Organic)
Fossilized Shark Tooth
Otodus sp. (approximate genus) / Hydroxyapatite fossil
sedimentary
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint nodule)
Chert (SiO2)
sedimentary
Tufa (Vesicular Limestone)
Tufa (form of Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock
sedimentary
Fossil Shark Tooth
Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)
fossil
Amber
Succinite
Mineraloid
Fossilized Coral (Favosites)
Favosites goldfussi / Tabulata
sedimentary
Fossiliferous Limestone with Rugose Coral
Rugosa (order), typically preserved in CaCO3 (Calcite)
sedimentary
Amber
Succinite (Resinite)
fossil
Fossil bivalve shell, likely oyster or related mollusk
Fossilized oyster-like bivalve; exact genus and age cannot be determined from the photograph
fossil
Fossilized Shark Tooth
Chondrichthyes (Class) fossil
fossil
Fossilized bone fragment
Petrified vertebrate bone; mineralized hydroxyapatite replaced or infilled by silica/carbonates
fossil
Amber (Copal)
Succiniferous Resin
mineraloid
Amber
Fossilized Tree Resin
gemstone
Amber
Succinite (fossilized resin)
mineral
Amber
Succinite
Organic Gemstone (sedimentary associations)
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Amber
Succinite (Formula: C10H16O)
Mineraloid
Agatized fossil nodule, possibly silicified wood or bone
Microcrystalline quartz (chalcedony), SiO₂, replacing fossil material
fossil
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Fossilized bivalve shell
Paleozoic–Mesozoic bivalve fossil; commonly classified as Bivalvia indet.
fossil
Fossiliferous limestone pebble (probable coral or shell fossil)
Calcite (CaCO₃), commonly biogenic limestone; exact fossil taxon indeterminate from the image
fossil
Fossilized Shark Tooth
Elasmobranchii fossil (likely Odontaspididae family)
sedimentary
Fossilized Coral (Favosites)
Favosites (extinct genus of tabulate coral)
sedimentary
Fossilized Pycnodonte Oyster
Pycnodonte (Gryphaeostrea) species; Composition is Calcium Carbonate (Calcite/Aragonite)
sedimentary
Mookaite Jasper
Siliceous (chert) sedimentary rock, a form of Jasper
Sedimentary
Amber (likely a small rough amber piece)
Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral
gemstone
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Fossiliferous Chert (with Brachiopod or Mollusk fragments)
Silicon dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions
sedimentary
Conglomerate with Fossilized Shark Teeth
Clastic sedimentary rock (Conglomerate) containing Elasmobranchii remains
sedimentary
Black Limestone
Bituminous Limestone (Calcium Carbonate - CaCO3)
sedimentary
Chert with Quartz Veins
Microcrystalline silica (SiO2)
sedimentary
Fossilized Oyster Shell (Limestone/Coquina)
Crassostrea (Fossilized Bivalve), Calcium Carbonate (CaCO3)
sedimentary