Arucaria mirabilis fossil "seedlings" (lignotubers) found in the petrified forest formation of Cerro Madre Ehija, Santa Cruz p...

Araucaria mirabilis (Spegazzini/Windhausen, 1924) sliced and polished "pine" cone fossil found in the petrified forest formatio...

Recently, I visited the interpretive center at the Falls of the Ohio State Park in Clarksville, Indiana located across the Ohio River from...