fossil

Fossil Turtle Shell

Testudines carapace fossil

AI-generated identification · may be incorrect

Hardness ~3-5 Mohs; matte, earthy luster; tan to light gray color with distinct, symmetrical scute and suture patterns.

Identified September 25, 2026More fossil →

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Physical properties

Hardness ~3-5 Mohs; matte, earthy luster; tan to light gray color with distinct, symmetrical scute and suture patterns.

Formation & geological history

Formed via permineralization and sediment infill following rapid burial in fluvial or lacustrine environments, frequently Oligocene to Pleistocene in age.

Uses & applications

Prized for paleontological study, natural history education, and private fossil collecting.

Geological facts

Turtle shells are made of interlocking bony plates derived from ribs and vertebrae, allowing them to preserve exceptionally well as internal casts or mineralized bone.

Field identification & locations

Identified in the field by the distinct hexagonal neural and costal plate symmetry; commonly found in formations like the White River Badlands of South Dakota.