Rock Identifier
Fossilized Burrow (Trace fossil (Ichnogenus)) — fossil
fossil

Fossilized Burrow

Trace fossil (Ichnogenus)

AI-generated identification · may be incorrect

Hardness varies by mineral replacement (typically Mohs 5-7), brownish-tan color, dull to vitreous luster, amorphous structure, no true cleavage.

Identified More fossil →
Explore Fossilized Burrow in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App StoreGoogle Play

Physical properties

Hardness varies by mineral replacement (typically Mohs 5-7), brownish-tan color, dull to vitreous luster, amorphous structure, no true cleavage.

Formation & geological history

Formed when ancient burrows or tunnels made by marine organisms became filled with sediment and mineralized over millions of years.

Uses & applications

Valued by paleontologists for studying ancient animal behavior and paleoenvironments, and collected as a unique geological specimen.

Geological facts

These trace fossils, known as ichnofossils, record the biological activity of organisms rather than the physical remains of their bodies.

Field identification & locations

Identify in the field by characteristic tubular or branching cylindrical shapes embedded in sedimentary rock, commonly found in ancient marine strata.

More like this

Other fossil specimens

Probable fossil-bearing rock or mineral concretion (Unidentified carbonate-rich concretion with a possible fossil inclusion) — fossil

Probable fossil-bearing rock or mineral concretion

Unidentified carbonate-rich concretion with a possible fossil inclusion

fossil
Likely fossil oyster shell (Fossilized bivalve shell; exact species cannot be identified from the image) — fossil

Likely fossil oyster shell

Fossilized bivalve shell; exact species cannot be identified from the image

fossil
Crinoid Stem Fossil in Matrix (Phylum Echinodermata, Class Crinoidea) — fossil

Crinoid Stem Fossil in Matrix

Phylum Echinodermata, Class Crinoidea

fossil
Fossiliferous limestone (likely a crinoidal or shell-fragment limestone) (Bioclastic limestone, composed chiefly of calcite (CaCO₃)) — sedimentary

Fossiliferous limestone (likely a crinoidal or shell-fragment limestone)

Bioclastic limestone, composed chiefly of calcite (CaCO₃)

sedimentary
Porous limestone pebble (Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image) — sedimentary

Porous limestone pebble

Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image

sedimentary
Weathered fossil bone fragment (identification uncertain) (Fossilized bone; exact taxon and mineral composition cannot be determined from the image) — fossil

Weathered fossil bone fragment (identification uncertain)

Fossilized bone; exact taxon and mineral composition cannot be determined from the image

fossil