Petoskey Stone
Hexagonaria percarinata
sedimentary
Category
Sedimentary (Fossilized)
Browse sedimentary (fossilized) specimens identified by the Rock Identifier community.
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Fossilized Brachiopod Shell / Mold
Phylum Brachiopoda (Fossilized organic matrix replaced by Silica/Calcite)
fossil
Petrified Wood / Fossilized Bone
Silicified / Mineralized Fossil (Silica SiO2)
fossil
Petrified Wood
Silicified Wood / Xylopal
fossil
Bivalve Fossil (Fossilized Shell)
Class Bivalvia (fossilized in Calcium Carbonate/Aragonite)
fossil
Fossilized Shark Tooth
Fossilised Chondrichthyes dental specimen (likely Otodus or Carcharias sp.)
mineral
Fossilized Oyster Shell
Gryphaea or Exogyra (Family Ostreidae)
fossil
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Glauconitic Sandstone with possible Trace Fossil
Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)
sedimentary
Fossilized Megalodon Tooth Fragment
Otodus megalodon (Carcharocles megalodon fossil)
sedimentary
Sandstone with Manganese Dendrites
Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)
sedimentary
Fossilized Turritella Gastropod (Internal Mold)
Turritella (Fossil Gastropod Crust)
sedimentary
Amber
Succinite
mineraloid
Amber
Succinite (C10H16O)
gemstone
Fossilized Shark Tooth in Matrix
Otodus obliquus (Chondrichthyes: Lamniformes)
fossil
Fossiliferous Sandstone / Quartzite Pebble
Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)
fossil
Fulgurite
Lechatelierite (vitreous silica tube)
mineral
Chert with Fossil inclusions
Microcrystalline Quartz (SiO2) with biogenic inclusions
sedimentary
Favosites Fossil (Honeycomb Coral)
Favosites (Extinct genus of tabulate coral)
sedimentary
Crinoid Stem Fossil
Crinoid columnal (Echinodermata)
fossil
Amber
Succinates (Organic Gemstone)
mineral
Petoskey Stone
Hexagonaria percarinata
sedimentary
Crinoid Stem Columns (Fossil)
Crinoidea (Class); often composed of the mineral Calcite (CaCO3)
sedimentary
Chert / Fossilized Burrow Cast
Microcrystalline Quartz (SiO2) with Trace Carbonates
sedimentary
Fossilized Oyster (Gryphaea or Exogyra)
Crassostrea / Gryphaea (Bivalvia)
sedimentary
Possible fossilized ammonite or concretion
Indeterminate fossil specimen; possibly an ammonoid mold/cast in iron-rich sedimentary rock
fossil
Fossilized Echinoid / Sea Urchin Internal Mold
Echinoidea internal cast (steinkern)
fossil
Graywacke with Quartz Veins
Argillaceous Sandstone (Graywacke)
sedimentary
Fossiliferous Limestone (Coquina-like)
Biogenic Limestone
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized tree resin
gemstone
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized tree resin
gemstone
Amber
Fossilized Tree Resin
gemstone
Coral Fossil (or Tumbled Shell/Coral fragment)
Anthozoa (Fossilized Coral)
fossil
Amber
Fossilized Tree Resin
gemstone
Amber
Fossilized Tree Resin
gemstone