All Fossils

Tumbled Serpentinite Pseudofossil (Non-biological) (Proterozoic to Mesozoic (Variable based on regional metamorphism eve...

Non-fossiliferous Pink Granite (Pseudofossil specimen) (Precambrian (typically Proterozoic era))

Pyritized Gomphoid Sponge (Desmas) (Cretaceous (Upper/Late Cretaceous, specifically Campanian stage))

Pyritized Gomphocladivm or 'Pine-cone' Fossil (Lower Jurassic (Toarcian))

Anthropomorphic Carving / Not a Fossil (Modern or Holocene (Not geological))

Pseudo-fossil (Amethyst Crystal) (Variable (Crystallization commonly occurs in Proterozoic to Cenozoic host rocks))

Non-fossil Mineral Specimen / Banded Malachite (Formation typically occurs in the oxidation zones of copper ore deposits...

Stone Projectile Point (Spear Head or Knife Blade) (Holocene / Late Quaternary (Human Prehistory))

Crystalline Fossilized Shell Fragment or Mineral Pseudomorph (Potentially Cretaceous to Neogene)

Crinoid Columnal (Stem Segment) (Mississippian subperiod (Carboniferous) to Devonian)

Non-fossiliferous Mineral Specimen (Quartz Crystal) (Indeterminate (Mineral formation can span hundreds of millions of y...

Silicified Coral Fragment (Likely Carboniferous to Permian)

Anthropomorphic Carved Stone (Pareidolia/Artifact) (N/A (Holocene or Archaeological context))

Calyptraea sp. (Silicified Slipper Snail/Cup-and-saucer shell) (Neogene (likely Miocene or Pliocene))

Inorganic Geologic Concretion or Pseudo-fossil Artifact (Indeterminate (Matrix suggests possible Mesozoic or Cenozoic or...

Not a Fossil (Anthropogenic Ceramic Figurine) (Holocene (Modern Archaeological Context))

Brown Chert Nodule (Pseudofossil) (Uncertain; typically found in sedimentary strata ranging from Paleozoic to Mesozoic.)

Crinoid Stem Segments (St. Cuthbert's Beads) (Carboniferous (likely Mississippian/Pennsylvanian))

Crinoid Stem Segments (Columnals) (Carboniferous Period (Mississippian to Pennsylvanian))

Non-fossil Amethyst Crystal Point (Not applicable (Mineral formation timeframe varies widely))

Orthocone Cephalopod (Orthoceras) (Ordovician to Silurian Period)

Non-fossil: Pre-Columbian Style Tripod Vessel (Holocene (Cultural/Archaeological context))

Anthropomorphic Clay Figurine (Holocene (Anthropocene))

Anthropomorphic Terra Cotta Figurine (Archaeological Artifact) (Holocene (Anthropocene context))

Non-fossil (Jewelry/Synthetic Crystal) (Modern (Anthropocene))

Trilobite Cephalon (Lower Head Shield) (Middle Devonian (likely Eifelian or Givetian stages))

Trilobite (Partial Cephalon) (Ordovician to Devonian)

Anthropomorphic Clay Figurine Head (Pseudo-fossil) (Modern / Holocene (Anthropogenic origin))

Anthropomorphic figurine (not a fossil) (Holocene / Anthropocene (Recent Construction))

Trace Fossil (Burrow) (Likely Cretaceous to Neogene (common in various periods, but matrix suggests Mesozoic/Cenozoic ch...

Weathered Fossiliferous Nodule / Crinoid Fragment (Possibly Carboniferous to Permian)

Fossiliferous Sedimentary Matrix / Shell Bed Fragment (Likely Devonian to Cretaceous depending on provenance)

Crystalline Fossil Fragment / Pseudofossil Mineral Aggregate (Possibly Carboniferous to Cretaceous (Indeterminate due to...

Indeterminate Crystalline Inclusion / Possible Biogenic Fragment (Unknown (Specimen appears to be a geological mineral s...

Sponge Fossil (Echinopora or Porifera) (Cretaceous or Paleogene)

Coral-derived Fossil Pebble (likely Porifera or Anthozoa) (Likely Paleozoic to Mesozoic (Devonian or Cretaceous are comm...

Spiriferid Brachiopod (Devonian)

Brachiopod (Lamp Shell) (Devonian (likely Middle to Late Devonian))

Modern Gastropod Shell (often mistaken for 'Horn Coral' fossils) (Holocene (Recent))

Brachiopod (Lamp Shell) (Devonian (likely Middle Devonian))

Modern Bivalve Shell (likely Corbicula) (Quaternary (Holocene Epoch))

Brachiopod (specifically a Productid or Spiriferid type) (Devonian to Mississippian)