Igneous And Fossil

Fossilized bone or tooth fragment

Indeterminate fossil bone; possibly mammalian or reptilian

Fossiliferous limestone with possible ammonite or shell impressions

Calcitic limestone, chiefly CaCO₃; fossils may include ammonoids or bivalves

Polished orbicular gabbro (likely “leopard-skin” or larvikite-type material)

Gabbro, a coarse-grained mafic plutonic rock; chiefly plagioclase feldspar and pyroxene, with possible olivine/amphibole and iron oxides

Polished fossiliferous limestone (likely orbicular/fossil limestone)

Fossiliferous micritic limestone, composed primarily of calcite (CaCO₃)

Fossilized bivalve shell fragment

Pectinid or related scallop bivalve; shell originally composed mainly of calcite (CaCO₃)

Crinoid Fossil in Limestone

Crinoid columnal (Class Crinoidea) in biomicrite

Fossil Shell (Bivalve)

Phylum Mollusca, Class Bivalvia

Crinoid Stem Fossil

Crinoid ossicle (Phylum Echinodermata)

Horn Coral Fossil

Rugose coral (Order Rugosa)

Polished fossil tooth, likely shark tooth

Fossilized selachian tooth; possibly Otodus or a related lamniform shark

Fossilized Horse Tooth

Equus ferus caballus (fossilized molar/premolar)

Fossilized Crinoid Stem in Matrix

Crinoid (Class: Crinoidea)

Mosasaur Tooth

Mosasauridae (likely Prognathodon or Mosasaurus species)

Petrified Wood

Silicified Wood (primarily SiO2)

Fossilized Coral (Petoskey Stone / Hexagonaria)

Hexagonaria percarinata / Rugosa coral

Fossilized Wood / Petrified Wood

Petrified Wood (Silicified Flora)

Fossilized Coral (Petrified Coral)

Lithostrotionella (example genus) / Scleractinia

Sandstone with Dendritic Inclusions

Quartzose Sandstone

Petrified Wood

Silicified wood (primarily Quartz, SiO2)

Fossilized Gryphaea (Devil's Toenail)

Gryphaea arcuata (Bivalvia: Gryphaeidae)

Brachiopod Fossil in Limestone

Phylum Brachiopoda, Class Rhynchonellata

Amber (Burmite)

Fossilized tree resin (Succinite variant)

Fossilized Shark Tooth

Fossilised Chondrichthyes dental specimen (likely Otodus or Carcharias sp.)

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (Mineral: Fluorapatite)

Fossilized Shark Tooth

Scapanorhynchus (Sand Tiger Shark relative)

Dinosaur Bone (Gembone)

Agatized Dinosaur Bone (Silicified Paleo-osteoid)

Fossilized Gastropod Shell

Gastropoda (Class)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with marine fossils

Tumbled fossil coral

Fossilized colonial coral, commonly Favositidae or related tabulate coral

Fossil Shark Tooth

Chondrichthyes dentition (Fossilized Tooth)

Bivalve Shell (Fossil or Contemporary)

Class Bivalvie (various genera and species of clams, cockles, etc.)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Tumbled fossil-bearing limestone or chert

Microcrystalline calcite (limestone), possibly silicified; fossil fragments visible

Coquina / Fossiliferous Limestone

Bioclastic Limestone (CaCO3)

Crinoid Stem Fossil

Crinoid (Class Crinoidea)

Fossil shark tooth

Likely a fossilized shark tooth, possibly *Carcharodon* or *Carcharhinus*; exact species requires provenance and close examination

Crinoid Stem Fossil

Class Crinoidea (Sea Lilies)

Petrified Coral Fossil

Rugose or Tabulate Coral (Hexagonaria or similar fossilized cnidarian)

Fossiliferous Limestone with Fossil Fragment

Fossiliferous Limestone (CaCO3 with organic remains)

Crinoid Stem Fossil

Crinoid ossicle (phylum Echinodermata)

Rounded weathered pebble, likely basaltic or metamorphic

Indeterminate fine-grained mafic rock; possibly basalt or altered basalt

Agatized fossil fragment, possibly silicified coral

Chalcedony (microcrystalline SiO₂) replacing carbonate fossil material