Fossil Assortment and Geological Specimens
Various (including Ammonoidea)
fossil
Category
Sedimentary (Fossilized)
Browse sedimentary (fossilized) specimens identified by the Rock Identifier community.
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Fossilized Coral
Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)
sedimentary
Fossilized Brachiopod
Phylum Brachiopoda (General mineral composition: Calcite/CaCO₃ or Silica/SiO₂)
sedimentary
Fossilized Blastoid
Pentremites (Class Blastoidea)
sedimentary
Fossilized Brachiopod
Articulata (Class) / Brachiopoda (Phylum)
sedimentary
Fossilized Bone
Permineralized Bone (Vertebrate Fossil)
fossil
Fossilized Coral
Rugosa / Tabulata coral fossils replaced by silica (Chalcedony/Quartz)
fossil
Kambaba Jasper
Stromatolite Jasper (Microcrystalline Quartz)
sedimentary
Amber
Succinite (Fossilized Tree Resin)
fossil
Fossil Shark Tooth
Chondrichthyes dentition (Fossilized Tooth)
fossil
Fossilized shell
Indeterminate bivalve shell; likely calcitic or aragonitic shell material (CaCO₃)
fossil
Spinosaurus aegyptiacus Fossil
Spinosaurus aegyptiacus (permineralized hydroxyapatite)
fossil
Limestone and Quartz Gravel with Petrified Wood
Sedimentary gravel aggregate and fossilized wood
sedimentary
Fossilized Echinoid
Echinoidea (likely of the order Echinoidea)
fossil
Fossilized Brachiopod
Phylum Brachiopoda (likely Order Spiriferida or Orthida)
fossil
Fossilized Brachiopod
Brachiopoda (e.g., Atrypa or Rhynchonellida)
fossil
Fossilized Bark
Lepidodendron / Sigillaria fossil impression
fossil
Amber
Succinite (fossilized tree resin)
mineral
Amber
Succinate (Organic Fossilized Resin)
mineraloid
Coprolite
Fossilized feces (various taxa)
sedimentary
Sandstone with Iron Concretion
Arenite with Limonite/Goethite Concretion
sedimentary
Fossil brachiopod shell
Brachiopoda; exact genus and species cannot be determined from the image
fossil
Baltic Amber
Succinite (Fossilized Tree Resin)
fossil
Cockle Shell Fossil
Cardium (Bivalvia)
fossil
Dendritic Siltstone
Siltstone with Manganese Oxide dendrites (MnO2)
sedimentary
Coprolite
Coprolite
sedimentary
Mosasaur Tooth Fossil
Mosasaurus sp.
fossil
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Fossil tooth
Mineralized vertebrate tooth; exact animal and species cannot be determined from the image
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Shark Tooth Fossil
Vertebrate fossilized tooth (Chondrichthyes)
fossil
Amber
Succinite (a fossilized organic resin)
mineral
Fossilized Coral
Rugose Coral (Order Rugosa) or Tabulate Coral
fossil
Oyster shell (fossil or recent shell)
Oyster shell, likely *Crassostrea* or a related bivalve; composed mainly of calcium carbonate (calcite/aragonite)
fossil
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
fossil
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Polished fossil gastropod shell
Fossilized gastropod (snail) shell; exact taxon cannot be determined from the image
fossil
Fossilized Coral
Rugose coral / Tabulate coral fossil in limestone matrix
fossil
Sandstone (Limonitic/Arkose)
Sandstone (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
sedimentary