Geology, Fossil, Coal, Calamariacee
"Querschnitt durch den Stamm einer Calamariacee der Steinkohlenformation"
Wood engraving of fossilized tree in coal showing the yearly rings of age.
The image is made after a photograph ca 1900.
Original antique print
On the reverse side of the page is text about various botanical fossils founf in coal.
Image: 9 x 13 cm (3.5 x 5.1")