Lepidodendron Plant Fossil
Lepidodendron sp. (Lycopodiophyta)
fossil
Category
Organic Specimen (Fossil)
Browse organic specimen (fossil) specimens identified by the Rock Identifier community.
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Limestone (Fossiliferous)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Geode / Fossilized Gastropod or Shell Cast
Silicon dioxide (Quartz) replacement / fossil mold
sedimentary
Seashell (Cockle Shell)
Cardiidae (Bivalvia), primary composition: Calcium Carbonate (CaCO3) in the form of aragonite or calcite
fossil
Sandstone (Quartz-rich)
Arenite (Quartz Arenite)
sedimentary
Amber
Succinite (C10H16O)
Mineraloid
Fossil Coral
Coral Limestone (a type of biogenic sedimentary rock)
Sedimentary
Limestone Concretion (Botryoidal/Calcareous Nodules)
Calcium Carbonate Concretion (CaCO3)
sedimentary
Fossil brachiopod shell
Brachiopoda indeterminate; possibly a strophomenid or spiriferid
fossil
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Fossiliferous Chert (Brachiopod/Bryozoan Fossil)
Microcrystalline quartz (SiO2) with fossil inclusions
sedimentary
Chert (Green Fossilized Algae or Jasper)
Silicon Dioxide (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Sandstone with Quarzite clasts
Arenite (SiO2 based)
sedimentary
Marble
Recrystallized Calcite / Dolomite (CaCO3)
metamorphic
Shale with Iron Staining
Fissile Mudrock (Sedimentary Rock)
sedimentary
Petrified Wood (Calamites Fossil)
Calamites sp. (Silicified/Permineralized Plant Fossil)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone (with vugs)
Arenite / Sedimentary Sandstone
sedimentary
Fossiliferous limestone, possibly containing a brachiopod or bivalve fossil
Calcite-rich limestone (CaCO₃), with an apparent shell impression or shell fragment
fossil
Limestone
Calcareous sedimentary rock (CaCO3)
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of organic matter)
fossil
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (Formula: SiO2 primary, with various cements)
sedimentary
Fossiliferous Limestone (Coral Rag)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Glauconitic Sandstone
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 in Quartz Sandstone
sedimentary
Probable amber fragment
Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)
gemstone
Weathered fossiliferous limestone pebble
Calcitic limestone, predominantly CaCO₃ (likely containing fossil or bioclast fragments)
sedimentary
Fossilized bone, likely a tooth or jaw fragment
Mineralized vertebrate bone; taxonomic identification requires clearer diagnostic anatomy
fossil
Flint / Chert Nodule
Silica (Microcrystalline Quartz), SiO2
sedimentary
Red Sandstone
Arenite (Iron-rich Sandstone)
sedimentary
Petrified Wood
Silicified Wood / Fossilized Wood (SiO2)
sedimentary
Ferruginous Sandstone (with ripple marks)
Arenite with Iron-Oxide (Fe2O3) cement
sedimentary
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2 with various lithic fragments)
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Banded chert or silicified limestone nodule
Microcrystalline quartz (SiO₂), possibly replacing carbonate fossils
sedimentary
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Organic (Sedimentary-associated)
Ferruginous Sandstone
Arenite with Iron Oxide cement (Fe2O3 / FeO(OH))
sedimentary