Fossilized Dinosaur Skull (Tyrannosaurus rex)
Tyrannosaurus rex (permineralized fossil), rich in Hydroxylapatite/Silica
sedimentary
Category
Sedimentary (Fossilized Organic Remain)
Browse sedimentary (fossilized organic remain) specimens identified by the Rock Identifier community.
Amber
Succinite (C10H16O)
mineral
Fossilized Crab Carapace (Concretion)
Decapoda (fossil), typically preserved in calcite or siderite concretion
sedimentary
Fossil Coral (Honeycomb Coral)
Favosites (extinct genus of Tabulate coral)
sedimentary
Fossilized Fish Skeleton in Matrix
Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices
sedimentary
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Amber
Succinite (specifically for Baltic amber); Complex mixture of organic compounds (C10H16O)
Organic Mineraloid
Amber
Succinite (specifically for Baltic amber); approximate formula C10H16O
organic mineraloid
Brain Coral Fossil
Family Mussidae or Merulinidae (Order Scleractinia)
sedimentary
Amber
Fossilized Tree Resin (C10H16O)
mineral
Amber
Succinite (with formula approximately C10H16O)
Organic mineraloid
Amber
(C10H16O)n – an amorphous organic substance, primarily composed of polymerized isoprenoids.
Mineral
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Mineraloid (Organic)
Amber
Succinite (Organic Mineraloid) - C10H16O
mineral
Amber
Succinicum (Organic Gemstone - Resinite)
mineraloid
Crinoid Stem Fragment
Crinoid (Phylum Echinodermata, Class Crinoidea)
sedimentary
Fossilized Crinoid Stem Segment
Crinoid (Phylum Echinodermata, Class Crinoidea)
sedimentary
Amber
Succinite (fossilized resin)
Organic Mineraloid
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Fossilized Gastropod (Snail)
Class Gastropoda (internal mold or 'steinkern')
sedimentary
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (C10H16O)
Organic Gemstone (fossilized resin)
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (fossilized tree resin)
mineraloid
Fossilized Coral (Petoskey Stone or Rugose Coral)
Antophyllum (Hexagonaria) or Scleractinia (CaCO3)
sedimentary
Granitic Sand
Detrital sediment (predominantly Quartz, Feldspar, and Mica)
sedimentary
Amber
Succinite (specifically Baltic Amber) - Formula: C10H16O (approximate)
Organic Mineraloid
Geode (unopened)
Silica-filled Concretion (SiO2)
sedimentary
Amber
Succinite (specific to Baltic amber), fossilized tree resin
Organic Mineraloid
Amber
Succinicum (Succinite); C10H16O
Mineraloid (Organic)
Quartz
Silicon Dioxide (SiO2)
mineral
Fossil Shell (Bivalve)
Class Bivalvia (Likely a member of the Ostreidae or Gryphaeidae family), CaCO3
sedimentary
Chert Geode with Quartz Druzy
Microcrystalline Quartz (SiO2) with macrocrystalline Quartz
sedimentary
Fossilized Shark Tooth (Fragment)
Elasmobranchii fossil (likely Cretalamna or Squalicorax genus)
sedimentary
Amber
Amber (Succinite), fossilized tree resin
Mineraloid
Amber
Succinite (Formula: C10H16O)
Organic Mineraloid
Breccia
Clastic Breccia (SiO2/CaCO3 dominated)
sedimentary
Amber
Succinite (a common variety of fossilized resin)
mineral
Fossil Coral (Rugosa or Solitary Coral)
Rugosa (Order), often referred to as 'Horn Coral' (Lithostrotionella or Grewingkia)
sedimentary
Quartz Geode (Druzy)
Crystalline Silicon Dioxide (SiO2)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Coral
Anthozoa (Fossilized)
Sedimentary / Fossil
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode form
sedimentary