Fossilized Plant or Tree Bark
Lepidodendron or Sigillaria (example genera)
sedimentary
Category
Sedimentary (Fossilized Organic Matter)
Browse sedimentary (fossilized organic matter) specimens identified by the Rock Identifier community.
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Fossiliferous Limestone
Calcium carbonate matrix with macrofossils (CaCO3)
fossil
Fossilized Insect in Nodular Matrix
Invertebrata / Insecta fossil in sedimentary concretion
fossil
Moss Agate
Chalcedony (Silicon Dioxide / SiO2)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2)
mineral
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
sedimentary
Fossilized Shark Tooth (Otodus)
Otodus sp. (calcium phosphate/hydroxylellite)
sedimentary
Fossiliferous Sandstone Pebble (with Crinoid / Shell Impression)
Sandstone containing fossiliferous inclusions (SiO2 matrix with calcite/silica cast fossil)
sedimentary
Fossilized Shark Tooth (likely Sand Tiger Shark)
Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)
fossil
Fossil Coral (Rugose Coral Fragment)
Rugosa (extinct order of solitary and colonial corals)
sedimentary
Dinosaur Claw Fossil
Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)
fossil
Anthracite Coal
Anthracite (Highly Metamorphosed Coal)
sedimentary
Anthracite Coal
Anthracite
metamorphic
Fossilized Shark Tooth (Eroded)
Carcharodon sp. or Otodus sp. fragment (likely)
fossil
Amber
Succinite (approximate formula C10H16O)
mineral
Amber
Succinate (Fossilized Tree Resin)
fossil
Anthracite Coal
Anthracite
metamorphic
Kambaba Jasper
Stromatolite (Fossilized Algae)
sedimentary
Moss Agate
Chalcedony (SiO2) with inclusions of hornblende or chlorite
mineral
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions
Mineral
Moss Agate
Chalcedony (Silicon Dioxide) with inclusions - SiO2
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide
mineral
Amber
Amber (C10H16O)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Amber
Succinite (C10H16O)
mineraloid
Fossilized Megalodon Tooth Fragment
Otodus megalodon (Carcharocles megalodon fossil)
sedimentary
Fossilized Shark Tooth (Fragment)
Elasmobranchii (fossilized tooth)
fossil
Septarian Nodule
Septarian Concretion (Calcite, Aragonite, and Limestone)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
sedimentary
Petrified Wood
Silicified Wood (primarily SiO₂ / Silicon Dioxide)
mineral
Chert with Calcite Veining
Microcrystalline Quartz (SiO2) with Calcium Carbonate (CaCO3) veins
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Septarian Nodule or Mud Crack Fossil
Septarian Nodule (Concretion)
sedimentary
Jasper (Mookaite variety likely)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Septarian Nodule (Dragon Stone)
Septarian Concretion (CaCO3 with Siderite and Calcite)
sedimentary
Septarian Nodule (Dragon Stone)
Septarian Geode (CaCO3 + Mg + Fe)
sedimentary
Tufa (Calcareous Tufa)
Calcareous Tufa (CaCO3)
sedimentary
Limonite (Iron Ore)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
mineral
Amber
Succinite (Fossilized Tree Resin)
fossil
Amber
Amber (Fossilized Tree Resin)
mineral
Amber
Succinite
mineraloid
Amber
Succinite (fossilized resin)
mineral