Igneous And Fossil

Belemnoit (Fossil)

Belemnoidea (Order), Rostrum / Guard

Ammonite Fossil

Ammonoidea (Calcium carbonate or Pyrite replaced)

Ammonite Fossil

Ammonoidea (subclass)

Belemnite Fossil

Belemnitida (Order within Cephalopoda)

Ammonite Fossil

Ammonoidea (typically preserved as Calcite or Aragonite)

Fossil Coral

Scleractinia (fossil order), primarily Calcium Carbonate (CaCO3)

Trilobite Fossil

Trilobita (Class), likely Phacopid or Asaphid order

Polished fossil coral (likely agatized coral)

Fossilized colonial coral; commonly silicified as chalcedony/quartz (SiO₂)

Weathered basalt pebble (likely vesicular basalt)

Basalt, chiefly plagioclase feldspar and pyroxene, with possible olivine and iron oxides

Rounded weathered stone, likely basaltic or volcanic rock

Indeterminate fine-grained mafic volcanic rock; possibly basalt or andesite

Vesicular basalt (possibly scoriaceous basalt)

Basalt, primarily plagioclase + clinopyroxene ± olivine; vesicles may be lined with secondary zeolites or calcite

Polished porphyritic volcanic rock (likely andesite or basalt)

Fine-grained mafic/intermediate igneous rock; likely basaltic-andesite/andesite with feldspar phenocrysts

Granite pebble

Granite, chiefly quartz, alkali feldspar, plagioclase, and mica

Chert (Jasper / Flint Variant)

Microcrystalline Quartz (SiO2)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with fossil inclusions

Polished ammonite fossil pendant

Ammonite; likely a polished, mineral-replaced ammonoid shell (commonly Calcite or Aragonite)

Polished fossil coral

Agatized or silicified coral, commonly fossilized stony coral (Scleractinia); exact genus cannot be determined from the image

Fossilized Rugose Coral (Horn Coral)

Order Rugosa

Petoskey Stone

Hexagonaria percarinata

Fossilized Mosasaur Tooth

Mosasauridae (likely Prognathodon or Mosasaurus)

Fossilized Shark Tooth (Sand Tiger)

Carcharias sp. (Fossilized Tooth)

Mosasaur Tooth

Mosasaurus sp.

Crinoid Stem Fossil (St John's Bead)

Crinoidea (Class)

Petrified Wood Fragment

Silicified Wood (SiO2)

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Fossilized Shell Impression / Siltstone Fossil

Bivalvia / Brachiopoda mold in Siltstone

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (Mineralized Apatite / Bio-apatite)

Fossilized Shark Tooth

Elasmobranchii tooth (commonly Otodus or Scapanorhynchus sp.)

Fossilized Shark Tooth

Chondrichthyes tooth

Coal

Bituminous or sub-bituminous coal (carbonaceous rock)

Fossilized Shark Tooth

Chondrichthyes (Class) fossilized tooth

Fossilized Coral

Hexagonaria (Rugose coral) / Calcium Carbonate (CaCO3)

Horn Coral Fossil

Rugosa (Order Rugosa)

Mammoth or Mastodon Tooth Fragment

Mammuthus / Mammut molar fragment

Dinosaur Claw Fossil

Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)

Bivalve Fossil (Clam/Mollusk)

Class: Bivalvia (Order: Veneroida), Calcium Carbonate (CaCO3)

Fossilized Rugose Coral

Order Rugosa (Calcium Carbonate - CaCO3)

Fossilized Bone Fragment

Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)

Fossilized Coral (Petoskey Stone or similar)

Hexagonaria percarinata (Fossilized Rugose Coral)

Sand Dollar Fossil

Echinoidea (Clypeasteroida)

Ammonite Fossil (Polished Half / Cleoniceras)

Ammonoidea (Subclass), often Cleoniceras genus; fossilized with Calcite (CaCO3) and Aragonite

Fossilized Shell in Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)