We are a catalog of fossils found in Parks Township, Armstrong County. The county of Armstrong is located in Pennsylvania within The United States. The city of Pittsburgh sits approximately 30 miles to the South West.

The fossil collection sites I explore are situated in an area embedded within the Glenshaw Formation.

The Glenshaw is one of two formations in the Conemaugh Group. The Casselman Formation exists above at the hill tops, about a mile away. The boundary between the Glenshaw and the Casselman is a layer called the Ames Limestone. The Monongahela Group is exposed above the Casselman and the Allegheny Group is exposed below the Glenshaw Formation.

All fossils I find are presumed to be from the Carboniferous Period of time, more specifically the Pennsylvanian. This time spans a period of 298.9 – 323.2 million years ago. You can find fossils locally in any type of rock. Local rocks include shale, limestone, sandstone or a mix of any of these. Generally fossils that I find are between 303 to 307 million years in age.

Information Sheets

One of my goals is to occasionally publish information sheets. They are available here.

Global Fossil Information

Other Interesting Fossil Websites

Occasionally I find people doing similar work. Here are some good websites for fossil exploration.

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