Fossil

Coral fossil (likely fossilized colonial coral)

Calcareous fossil coral; commonly *Scleractinia* or *Tabulate/ rugose coral* (identification requires close pore-pattern examination)

Fossil oyster shell

Fossilized bivalve, likely Ostrea or a related oyster genus; calcite (CaCO₃) shell

Weathered sandstone or iron-stained sedimentary rock

Quartz-rich sandstone, possibly ferruginous sandstone

Weathered limestone fragment

Calcitic limestone (mostly CaCO₃; possibly micritic limestone)

Petrified Wood

Silicified Wood (SiO2)

Fossil Coral

Rugose or Tabulate Coral Fossil (CaCO3 replacement)

Fossil Coral

Rugose Coral or Tabulate Coral (Phylum Cnidaria)

Fossiliferous limestone

Bioclastic limestone, likely containing brachiopod or bivalve impressions

Fossiliferous Brachiopod in Shale

Brachiopoda (Phylum) preserved in Carbonaceous Shale

Weathered fossiliferous limestone

Calcitic limestone, predominantly calcium carbonate (CaCO₃), possibly containing shell or coral fossil fragments

Fossil-bearing limestone slab

Bioclastic limestone, likely containing brachiopod or bivalve impressions

Fossiliferous limestone

Calcitic limestone, primarily calcium carbonate (CaCO₃), with visible shell or coral fossils

Fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃)

Fossil-bearing limestone, possibly a crinoid or shell fragment

Calcite (CaCO₃) limestone containing an indeterminate marine fossil

Fossil Crab

Decapoda (likely Avitelmessus or Raninidae family)

Fossil Shark Tooth

Chondrichthyes (class)

Siltstone with plant fossil impression

Sedimentary rock with Archaeopteris or Calamites flora impression

Bivalve Fossil (Clam)

Class Bivalvia (e.g., Exogyra or Gryphaea species)

Fossilized Gastropod / Coral

Phylum Mollusca / Cnidaria (Silicified or Calcified)

Shark Tooth Fossil

Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)

Fossilized Bone

Permineralized Vertebrate Bone

Fossil-bearing Sedimentary Rock

Sedimentum cum fossili

Fossil fish slab

Fossilized fish remains, likely a laminated shale-hosted vertebrate fossil; exact taxon is indeterminate from the image

Fossil gastropod shell

Calcareous mollusk shell, chiefly aragonite or calcite (likely a large marine gastropod)

Small weathered fossil or mineral fragment

Indeterminate; possibly fossilized shell, bone, or a pale carbonate mineral

Fossiliferous Sandstone (with Brachiopod or Bivalve mold)

Clastic Sedimentary Rock with Macrofossil Mold

Brachiopod Fossil

Rhynchonellida (Order)

Likely fossiliferous limestone fragment

Calcareous fossil assemblage, chiefly calcium carbonate (CaCO₃), possibly crinoid, bivalve, or bryozoan material in limestone

Polished fossiliferous stone egg, likely fossiliferous limestone or marble

Unidentified carbonate rock; likely calcite-rich limestone (CaCO₃), possibly fossil-bearing

Polished fossil bone fragment

Fossilized bone, likely mammalian or reptilian; exact taxon cannot be determined from the image

Tumbled fossil shark tooth pendant

Likely fossilized shark tooth, possibly Otodus or Carcharhinus; exact species cannot be confirmed from the image

Fossil Bivalve / Ostreid Shell (Hag Stone / Perforated Pebble)

Phylum Mollusca, Class Bivalvia

Fossiliferous limestone, likely coral or shell-rich fragment

Calcite (CaCO₃), commonly bioclastic limestone containing fossilized marine organisms

Fossil coral limestone

Fossilized colonial coral, commonly tabulate or rugose coral in calcite-rich limestone (CaCO₃)

Fossil oyster shell fragment

Fossilized oyster (Ostreidae), composed mainly of calcite (CaCO₃)

Fossil Shark Tooth

Otodus sp. (Eocene shark fossil)

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Fossilized Nut / Coprolite / Concretion

Trace Fossil / Permineralized Plant Material

Fossilized bone, likely a large vertebrate limb or rib fragment

Petrified bone; exact taxon indeterminate from the image

Fossil Turtle Shell

Testudines carapace fossil

Fossiliferous Limestone Pebble

Limestone with fossil inclusion

Fossilized Shark Tooth (fragment)

Elasmobranchii (Class) fossil