Amber
Succinite (Fossilized Tree Resin)
gemstone
Category
Sedimentary (Fossilized Organic Matter)
Browse sedimentary (fossilized organic matter) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Fossilized Organic Matter) in the encyclopedia
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Crinoid Stem Fragment
Crinoid (Phylum Echinodermata, Class Crinoidea)
sedimentary
Amber
Succinite / Fossilized Resin (C10H16O)
fossil
Amber
Succinited (fossilized tree resin)
fossil
Amber (with potentially inclusions)
Succinite (Fossilized Tree Resin)
Mineraloid
Fossilized Shark Teeth
Otodus sp. (Eocene Sand Tiger/Mackerel Shark)
fossil
Stromatolite (Jasper-replaced)
Fossilized Stromatolite (Cyanobacteria / Cryptozon / Silica SiO2)
sedimentary
Fossil Snail
Gastropoda (fossilized)
fossil
Septarian Nodule
Septarian Concretion
sedimentary
Fossilized Horn Coral
Rugosa (Rugose Coral)
fossil
Moss Agate
Silicon Dioxide (Chalcedony variety)
mineral
Green Moss Agate
Agate (Silicon Dioxide, SiO2) with inclusions
mineral
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Hornblende inclusions
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
mineral
Fossilized Shell Fragment / Mother of Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral
fossil
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Petrified Wood
Silicified Wood (SiO2)
fossil
Coral Fossil (Hexagonaria)
Hexagonaria sp. (Silica-replaced)
fossil
Fossil Shark Tooth
Chondrichthyes (class); likely Lamniformes (order) fossilized in Apatite/Hydroxyapatite
fossil
Fossilized Coral (Petoskey Stone or Rugose Coral)
Antophyllum (Hexagonaria) or Scleractinia (CaCO3)
sedimentary
Amber (Tumbled/Polished)
Succinite (Fossilized Tree Resin)
mineraloid
Fossilized Gastropod (Snail)
Class Gastropoda (internal mold or 'steinkern')
sedimentary
Moss Agate
Silicon dioxide (SiO2) with mineral inclusions
Mineral
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Amber (Rough Baltics/Beach Specimen)
Succinicum (Organic Gemstone - Fossilized Resin)
mineral
Chert (Chert Nodule with Cortex)
Microcrystalline Quartz (SiO2)
sedimentary
Shark Tooth Fossil
Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)
fossil
Fossiliferous Limestone
Sedimentary rock containing Indeterminate Fossil remains (likely Crinoid stem or Bryozoan fragment)
fossil
Amber
Succiniferous fossil resin (C10H16O)
gemstone
Concretion
Sedimentary Concretion
sedimentary
Septarian Nodule
Septarian Concretion (Calcite, Aragonite, and Limestone)
sedimentary
Fossil Snail
Gastropoda (fossilized)
fossil
Shark Tooth Fossil
Otodus sp. (possibly Cretalamna)
fossil
Amber
Succinite (fossilized resin, C10H16O)
mineral
Anthracite Coal
Anthracite
metamorphic
Fossiliferous Limestone (with Oyster Fossils)
Fossiliferous Calcarenite / Bivalve Mollusk Fossil
sedimentary
Fossil Shark Tooth
Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)
fossil
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Petrified Wood
Silicon Dioxide (SiO2)
fossil
Fossilized Echinoid (Sea Urchin)
Echinoidea (Class) - Often found as Micraster or Clypeaster specimens
sedimentary