fossilized shells
Stone-turned sea remnants
Fossilized shells are the preserved remains of mollusks, brachiopods, or other shelled creatures, transformed over millions of years into stone.
The original shell material is typically replaced by minerals, leaving a detailed impression of the organism's structure.
Found in sedimentary rock worldwide, they serve as index fossils for dating geological strata: The cliff face was studded with fossilized shells from an ancient seabed.
- spiralCurve winding around center
- spiral patternDesign curving around center
- mollusksSoft-bodied invertebrates, often shelled
- coquinaRock of cemented shells
- extinct speciesOrganism with no survivors
turned to stone · sedimentation · brachiopods · gastropods · ammonites · bivalves · mineralization · time capsule · ocean floor · petrification · calcite · marine environments · sea creature · clam · paleontology · natural history · calcium carbonate · aragonite
- shell fossilsammonite, ammonites, belemnite, nautiloid, brachiopods