Paleontologists Find 450-Million-Year-Old Fossilized Trilobite Eggs –

A research team led by Western Illinois University scientist Thomas Hegna has announced the discovery of two pyritized, egg-bearing specimens of the Ordovician trilobite Triarthrus eatoni.

Left: ventrally preserved specimen of the Ordovician trilobite Triarthrus eatoni showing nine eggs in the specimen’s left genal angle; scale bar – 5 mm. Right: close up of the egg-bearing region from the specimen; scale bar – 2 mm (top); scanning electron microscopy (SEM) image of the eggs from the specimen (bottom). Image credit: Thomas A. Hegna et al, doi: 10.1130/G38773.1.

The two egg-bearing specimens of Triarthrus eatoni were found in the Martin Quarry in the Whetstone Gulf Formation in New York, the United States.

“This is not the first time that supposed trilobite eggs have been identified,” Dr. Hegna and co-authors said.

“However, it is the first time that eggs have been…

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