Fossilized Shark Teeth
Otodus sp. (Eocene Sand Tiger/Mackerel Shark)
fossil
Category
Sedimentary (Fossilized Organic Matter)
Browse sedimentary (fossilized organic matter) specimens identified by the Rock Identifier community.
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Shark Tooth Fossil
Otodus sp. (possibly Cretalamna)
fossil
Weathered fossil fragment, possibly bone
Indeterminate fossilized bone; likely mineralized vertebrate bone (apatite-rich)
fossil
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Septarian Nodule (Septarian Dragon Stone)
Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)
sedimentary
Anthracite Coal
Anthracite
metamorphic
Amber
Succiniferous fossil resin (C10H16O)
gemstone
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Coral Fossil (Hexagonaria)
Hexagonaria sp. (Silica-replaced)
fossil
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
sedimentary
Fossil Shark Tooth
Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)
fossil
Petrified Wood
Silicified Wood / Xylopal
fossil
Fossilized Coral
Rugose coral / Tabulate coral (Calcium carbonate, CaCO3)
fossil
Amber
Succinite (fossilized resin)
Organic Mineraloid
Anthracite Coal
Anthracite (Metamorphic/High-grade Sedimentary Coal)
sedimentary
Fossilized Shark Tooth
Elasmobranchii gen. sp. indet. (Calcium Phosphate - Ca5(PO4)3(OH,F,Cl))
fossil
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)
mineral
Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
mineral
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Mineral (variety of Chalcedony)
Moss Agate with Quartz Druzy
Chalcedony with inclusions (SiO2)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mg/Mn/Chlorite)
mineral
Amber (polished piece)
Fossilized tree resin; amber is an organic mineraloid, not a true mineral
gemstone
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
mineral
Moss Agate
Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)
mineral
Fossil Shark Tooth
Elasmobranchii (Class) fossil - possibly Odontaspididae family
fossil
Yellow amber beads
Amber (fossilized tree resin; organic mineraloid, not a true mineral)
gemstone
Yellow cabochon, likely amber or yellow glass/resin
Unconfirmed; possibly amber (fossilized tree resin, an amorphous organic material)
gemstone
Mammoth Tooth
Mammuthus tooth fossil
fossil
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
fossil
Amber
Succinite (C10H16O)
mineral
Herkimer Diamond (Quartz with Carbon Inclusions)
Silicon Dioxide (SiO2) with Anthraxolite inclusions
mineral
Brown translucent mineral fragment, possibly iron-stained quartz or amber
Uncertain; likely quartz (SiO₂) with iron-oxide staining, though amber (fossilized resin) is possible
mineral
Red Amber (Burmite/Cherry Amber)
Succinite / Retinite (Organic Fossilized Resin, C10H16O)
Mineraloid (Organic)
Fossil Brachiopod
Phylum Brachiopoda
fossil
Coral Fossil (Petrified Coral)
Scleractinia (Order) - Calcified Fossil Skeleton (CaCO3)
sedimentary
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Fossilized Coral
Anthozoa (Fossilized)
Sedimentary / Fossil
Fossilized Shark Tooth (Anterior/Lateral)
Otodus megalodon or Carcharodon carcharias (fossilized)
fossil
Amber
(C10H16O)n – an amorphous organic substance, primarily composed of polymerized isoprenoids.
Mineral
Polished amber inclusion specimen
Amber (fossilized plant resin), commonly succinite; organic mineraloid
gemstone