Fossiliferous Limestone (Crinoidal)
Crinoid Limestone (CaCO3 with fossil biological remains)
sedimentary
Category
Sedimentary (Fossilized Organic Remains)
Browse sedimentary (fossilized organic remains) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Fossilized Organic Remains) in the encyclopedia
View all →
Amber
Fossilized Tree Resin (Succinate)
mineral
Dendritic Limestone
Calcite with Manganese Oxide (Manganese Dendrites)
sedimentary
Amber / Copal
Succinite (fossilized tree resin)
mineraloid
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
sedimentary
Bivalve Fossil (Internal Mold/Steinkern)
Class Bivalvia (Fossilized Mold)
sedimentary
Amber
Succinite (Fossilized Tree Resin)
fossil
Fossilized Coral
Rugosa / Scleractinia (Agatized or Calcitized Coral)
fossil
Sedimentary Strata of the Badlands (Mudstone, Siltstone, and Sandstone)
White River Group (Brule and Chadron Formations)
sedimentary
Fossilized Shark Tooth
Chondrichthyes (Class) fossilized tooth
fossil
Raw Amber / Resin Mineral
Succinite (Fossilized Tree Resin)
gemstone
Seashell (Cone Snail Shell)
Conus sp. (Calcium Carbonate, CaCO3)
fossil
Amber
Succinite (with approximate formula C10H16O)
mineraloid
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
fossil
Megalodon Shark Tooth
Otodus megalodon
fossil
Amber
Succinrite (Organic Gemstone)
mineraloid
Siderite Concretion (Nodule)
Iron Carbonate (FeCO3) Concretion
sedimentary
Polished amber-colored stone, possibly chert or jasper
Uncertain from image; likely microcrystalline quartz (SiO₂) if chert/jasper
mineral
Mookaite Jasper
Radiolarite (SiO2)
sedimentary
Crinoid Fossil in Limestone
Crinoidea (Phylum Echinodermata) in Calcite Matrix (CaCO3)
fossil
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite/Hematite and Chert)
sedimentary
Petrified Bone (Fossil Bone)
Per mineralization fossil bone (varies by organism, predominantly replacement by SiO2 - Quartz/Chalcedony)
fossil
Petrified Palmwood
Palmoxylon (fossilized monocot xylem)
sedimentary
Ironstone Concretion (Limonite/Goethite)
Iron oxide concretion (contains FeO(OH)·nH2O)
sedimentary
Fossiliferous Shale
Fossiliferous Mudstone / Shale
sedimentary
Amber
Succinite (Fossilized Tree Resin, C10H16O)
gemstone
Trilobite Pygidium (Tail Segment)
Phylum Arthropoda, Class Trilobita (likely order Phacopida)
sedimentary (fossil)
Fossilized Bark
Lepidodendron / Sigillaria fossil impression
fossil
Amber / Copal
Organic resin, C10H16O
mineral
Crinoid stem fossil
Crinoidea
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Chert (containing a small fossil)
Microcrystalline Quartz (SiO2)
sedimentary
Mookaite Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (variably Oolitic or Fossiliferous)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Crinoidal Limestone
Bioclastic Limestone
Sedimentary
Amber
Succinite (amorphous organic polymer)
mineral
Amber jewelry (possibly amber-colored glass or resin)
Amber — fossilized plant resin, chiefly composed of polymerized terpenoids; the pictured material cannot be confirmed from the image
gemstone
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Fossil Shark Tooth
Chondrichthyes tooth fossil
fossil