Cockle Shell (Bivalve)
Cardiidae (Calcium Carbonate, CaCO3)
fossil
Category
Igneous And Fossil
Browse igneous and fossil specimens identified by the Rock Identifier community.
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Petoskey Stone
Hexagonaria percarinata
fossil
Petrified Wood
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
fossil
Sand Dollar (Fossilized or Calcium Carbonate Skeleton)
Clypeasteroida (Order)
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Fossilized Shark Tooth
Carcharodon carcharias or similar Lamniformes ancestor (fossilized hydroxylapatite replaced by minerals)
fossil
Petrified Wood
Silicified wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2 permineralization)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood Agate
Silicified Wood (primarily SiO2)
fossil
Fossiliferous Shale
Sedimentary Clastic Rock with fossil inclusions (likely Brachiopod or Bivalve impressions)
fossil
Fossilized Wood (Petrified Wood)
Agatized wood (primarily SiO2)
fossil
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Petoskey Stone
Hexagonaria percarinata (Silicified/Calcitic)
fossil
Fossilized Shell in Limestone
Carbonate sedimentary rock with Bivalvia or Brachiopoda remains
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Petrified Wood
Silicified wood (SiO2)
fossil
Fossilized Shark Tooth (Root Portion)
Selachimorpha (partial specimen)
fossil
Amber Dragonfly Brooch
Succinited (Baltic Amber)
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Petrified Wood
Silicified Wood (Permineralized wood)
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Amber
Succinite (Fossilized Tree Resin)
fossil
Amber
Succinite (fossilized tree resin)
fossil
Fossilized Coral (Petoskey Stone precursor)
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, SiO2)
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Amber
Succinite (Fossilized Resin)
fossil
Dinosaur Bone (Petrified/Agatized)
Permineralized Dinosauria Bone (Silicate Replacement)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossiliferous Limestone (Crinoid stem fragment)
Crinoidea (Phylum Echinodermata) in Calcite matrix
fossil
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Amber
Succinited (fossilized tree resin)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
fossil
Baltic Amber
Succinite (Fossilized Tree Resin)
fossil
Baltic Amber
Succinite (fossilized resin)
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil