Pennsylvanian

Wild Cow Member, Madera Formation

Los Lunes, New Mexico, USA

54mm slab

Leaf, Fern.

Here’s a nice fern specimen from a locality lesser-available on the market.

The Pennsylvanian Period (Late Carboniferous) was a time of tropical climates across much of the world though ice was forming at the poles near its end.  Vast lowland swamps dominated much of what would become North America and Europe as the continents were drifting toward each other – destined to assemble into the supercontinent, Pangaea.