Fossilized Shark Tooth
Chondrichthyes tooth
fossil
Category
Organic Specimen (Fossil)
Browse organic specimen (fossil) specimens identified by the Rock Identifier community.
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Dinosaur Bone (Gembone)
Agatized Dinosaur Bone (Silicified Paleo-osteoid)
metamorphic
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Fossil Shark Tooth
Chondrichthyes (Class)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossil Shell (Brachiopod or Mollusk)
Phylum Brachiopoda or Class Bivalvia (e.g., Mucrospirifer or similar genus)
fossil
Petrified wood
Silicified wood, commonly quartz/chalcedony (SiO₂) replacing wood tissue
fossil
Fossil Coral
Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossilized Shark Tooth
Chondrichthyes (class)
fossil
Fossil Shark Tooth
Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicon Dioxide (SiO2) - Calcified / Silicified Wood
sedimentary
Petrified Wood
Silicified wood (Quartz, SiO2)
metamorphic
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Petrified Wood and Mixed Rocks
Silicified Wood (SiO2)
fossil
Shark Tooth Fossil
Carcharocles megalodon or similar extinct shark tooth
fossil
Amber (Copal)
Succinate (Fossilized Tree Resin)
mineraloid
Fossil shell fragment (likely brachiopod or bivalve)
Indeterminate fossilized carbonate shell; likely Brachiopoda or Bivalvia
fossil
Fossilized Coral in Chert
Anthozoa (Class) fossil in Cryptocrystalline Quartz (SiO2)
fossil
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate with Fossils)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with marine fossils
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Limestone pebble
Sedimentary rock, primarily calcium carbonate (CaCO3)
sedimentary
Favosites Fossil (Honeycomb Coral)
Favosites (Extinct genus of Tabulate Coral)
sedimentary
Fossil Shark Tooth (Sand Tiger Shark type)
Carcharias sp. (likely Odontaspis)
fossil
Ironstone Concretion
Ironstone (primarily Siderite or Limonite)
sedimentary
Fossilized Shark Tooth
Lamniformes (order) fossil
fossil
Shark Tooth Fossil
Elasmobranchii fossil (likely Carcharias or Odontaspis sp.)
fossil
Orthoceras Fossil Limestone
Orthoceras (extinct Cephalopod fossil) in Matrix
sedimentary
Rugose Coral Fossil (Horn Coral)
Order Rugosa
fossil
Coral Fossil (Favosites)
Favosites (Extinct genus of tabulate corals)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of cellulose)
fossil
Fossil Coral (Rugose Coral Fragment)
Rugosa (extinct order of solitary and colonial corals)
sedimentary
Weathered sandstone or iron-stained sedimentary rock
Quartz-rich sandstone, possibly ferruginous sandstone
sedimentary
Limestone
Calcium carbonate (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified wood (SiO2 - Silicon Dioxide)
sedimentary