Igneous And Fossil

Fossil Coral

Scleractinia (Fossilized Coral)

Crinoid Fossil

Crinoidea (Echinodermata)

Fossil Coral

Scleractinia / Rugosa (Silicified Coral)

Fossil Coral

Hexagonaria or Rugose Coral (Fossilized Calcium Carbonate / Silica)

Fossil Coral

Hexagonaria or Rugose coral fossil in limestone/silica matrix

Fossil Coral

Cnidaria fossil (often Calcium Carbonate / CaCO3)

Ammonite Fossil

Ammonoidea (primarily composed of Calcite, CaCO3, or Pyrite)

Brachiopod Fossil

Phylum Brachiopoda (Class Rhynchonellata)

Ammonite Fossil

Ammonoidea (Calcium carbonate - CaCO3)

Brachiopod Fossil

Phylum Brachiopoda (replaced by Calcite or Silica)

Ammonite Fossil

Ammonitida (Extinct subclass of Cephalopoda)

Calamites (Fossil)

Calamites sp. (Tracheophyta, Equisetopsida)

Bryozoan Fossil

Phylum Bryozoa (commonly known as 'moss animals')

Gastropod Fossil

Phylum Mollusca, Class Gastropoda (Calcium Carbonate, CaCO3)

Fossil Coral

Cnidaria Anthozoa (Fossilized)

Belemnoit Fossil (Sea Squid Fossil)

Belemnitida (Order within Cephalopoda)

Glacial erratic boulder, probably granite or granitic gneiss

Granite–gneiss; mainly quartz, feldspar, and mica

Fossilized Ray Barb (Stinger) Fragment

Myliobatiformes indet. (Fossil stingray spine)

Seashell Fossil

Invertebrate fossil (phylum Mollusca)

Fossil Coral

Scleractinia (Stony Coral) fossil

Fossil Coral

Rugosa or Tabulata coral fossil

Brachiopod Fossil

Phylum Brachiopoda

Fossil Coral

Hexagonaria / Rugosa / Scleractinia

Polished fossiliferous agate

Chalcedony (microcrystalline SiO₂), likely containing fossil coral or stromatoporoid structures

Weathered quartz-rich pebble

Likely quartzite or felsic granitoid fragment; predominantly SiO₂ quartz with minor feldspar and dark iron-bearing minerals

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Turritella Gastropod Fossil

Turritella (mollusk fossil in sedimentary matrix)

Trace Fossil (Lichenandites or Rhynie Chert Chert with Microfossils)

Trace fossil in microcrystalline quartz (SiO2)

Fossilized Bone Fragment

Vertebrate Fossil Material (Apatite/Calcium Phosphate)

Biotite granite (weathered granitic rock)

Granite; chiefly quartz (SiO₂), feldspar, and biotite mica

Light-colored carbonate pebble, likely limestone

Limestone; predominantly calcite (CaCO₃), possibly micritic or fossiliferous

Mixed beach-stone collection, primarily quartz-rich pebbles and possible fossils

Likely quartz (SiO₂), quartzite, chert, and carbonate rock; exact identification is uncertain from the image

Limestone

Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone containing a Brachiopod or Mollusk Impression

Biogenic Sedimentary Rock / Fossiliferous Limestone

Likely tumbled or polished fossil shell

Fossilized mollusk shell; exact species cannot be determined from this image

Echinoid Fossil (Sea Urchin Fossil)

Echinoidea (phylum Echinodermata), often preserved as Calcite (CaCO3)

Porous fossil fragment (possibly fossilized coral or shell)

Unidentified fossil carbonate; likely calcite/aragonite

Fossilized belemnite guard (likely)

Belemnitella or related belemnite; fossil calcite (CaCO₃)

Fossiliferous Limestone

CaCO3 (with biological inclusions)

Fossiliferous Limestone

Biogenic Sedimentary Rock (primarily CaCO3)

Limestone

CaCO3 (principally Calcite)

Limestone Pebble with Crinoid Fossil

Calcium Carbonate (CaCO3) - Fossiliferous Limestone