Fossilized Mosasaur Tooth
Mosasauridae (likely Prognathodon or Mosasaurus)
fossil
Category
Sedimentary (Fossilized)
Browse sedimentary (fossilized) specimens identified by the Rock Identifier community.
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Oyster Shell (Biogenic Calcium Carbonate)
Crassostrea virginica (or related species) - Calcium Carbonate (CaCO3)
sedimentary
Fossilized Gastropod Shell
Class Gastropoda (Fossil)
sedimentary
Fossilized Bivalve Shell
Bivalvia (Phylum Mollusca)
fossil
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Petrified Wood (Jet or Coalified Wood appearance)
Silicified wood (principally SiO2) or Carbonized Wood
sedimentary
Fossilized Shark Tooth
Chondrichthyes (class)
fossil
Fossilized Shark Tooth
Elasmobranchii tooth (commonly Otodus or Scapanorhynchus sp.)
fossil
Fossilized Coral (Favosites)
Favosites (Extinct Tabulate Coral)
sedimentary
Fossilized Shark Tooth
Otodus obliquus (Mackerel Shark)
sedimentary
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary
Fossil Coral
Scleractinia (Stony Coral) fossil
fossil
Likely weathered quartz-rich stone or fossil fragment
Indeterminate; possibly quartz-bearing sandstone, iron-stained quartz, or a fragmentary fossil
mineral
Fossil Belemnite Guard
Belemnitida (Order), often Hibolites or Neohibolites spp.
fossil
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Mineraloid
Amber
Succinite (specifically for Baltic amber); chemical formula approximately C10H16O
Mineraloid
Fossilized Shark Tooth
Lamniformes (order) fossil
fossil
Fossiliferous Limestone with Fossil Fragment
Fossiliferous Limestone (CaCO3 with organic remains)
fossil
Fossilized Dinosaur Bone
Perineralized Bone (Fluorapatite/Quartz replacement)
fossil
Amber
Succinite (a fossilized organic resin containing succinic acid)
mineraloid
Fossilized Shark Tooth
Carcharodon carcharias (fossilized) / Hydroxyapatite permineralized with silica or iron
sedimentary
Fossiliferous Limestone Pebble
Biogenic Sedimentary Rock (CaCO3)
fossil
Fossilized Shark Tooth
Elasmobranchii fossil (likely Odontaspididae family)
sedimentary
Fossiliferous Limestone with Rugose Coral
Rugosa (order), typically preserved in CaCO3 (Calcite)
sedimentary
Sandstone (Cross-bedded Drill Core)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Glauconitic Sandstone (Greensand pebble)
Glauconitic Quartz Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)
sedimentary
Chert (containing fossil leaf impression)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
sedimentary
Fossilized Ripple Marks or Stromatolite
Sedimentary ripple mark imprint / Biosedimentary structure
fossil
Fossilized Coral (Favosites)
Favosites goldfussi / Tabulata
sedimentary
Fossilized Horn Coral
Order Rugosa (Rugose Coral)
sedimentary
Fossilized Brachiopod Shell
Phylum Brachiopoda (likely Order Spiriferida or Strophomenida)
sedimentary
Fossilized Gastropod in Limestone
Gastropoda (Class) in Fossiliferous Limestone
sedimentary
Fossilized Coral (Favosites)
Favosites (extinct genus of tabulate coral)
sedimentary
Fossilized Honeycomb Coral
Favosites (extinct genus of tabulate corals)
sedimentary
Fossilized Rugose Coral
Rugosa (Order Rugosa, typically fossilized in Limestone)
sedimentary
Fossilized Pycnodonte Oyster
Pycnodonte (Gryphaeostrea) species; Composition is Calcium Carbonate (Calcite/Aragonite)
sedimentary
Fossilized Shark Tooth
Fossilized elasmobranch tooth (Apatite/Calcium Phosphate)
sedimentary
Belemnite (Fossilized Rostrum)
Belemnitida (Order), composed of Calcite (CaCO3)
sedimentary