Rare Unique Polished Oklahoma Stromatolite Half Nodule w/Mayfly Bore Holes 8.5+Lb 6x5"
Incredible old collection find. This ancient piece of Stromatolite contains a large pocket of Mayfly Bore holes. These are often referred to as Ichnofossils. These Ichnofossils (trace fossils) produced by the dwelling activities of ancient freshwater mayfly nymphs create these distinct markings and are usually preserved as U-shaped pouches, tubes, or bore holes left behind in compressed mud (firmground), fossilized wood, or rock substrates
Collector notes
Stromatolite and microbially induced sedimentary structure (MISS) fossils in Oklahoma are primarily found in the Pennsylvanian-aged Hartshorne Sandstone of Haskell County and older Cambrian layers in the Arbuckle Mountains. Around 305 million years old (Pennsylvanian period) for Haskell County specimens; others date back to the Lower Cambrian in the Arbuckle Mountains.
- Formation
- Not listed
- Material
- Not listed
- Dimensions
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- Collector grade
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