Photographed by Michael P. Klimetz

Carboniferous

Mazon Creek

Will County

ILLINOIS

Pecopteris

Photographed by Michael P. Klimetz

[Sheared Impressions in Slate]

Carboniferous

Newport

Newport County

RHODE ISLAND

Photographed by Michael P. Klimetz

[Sheared Impressions in Slate]

Carboniferous

Newport

Newport County

RHODE ISLAND