chert from Altenburg - Nobitz gravel pit, detail
Top view on chert surface with Subsigillaria brardii, cortex
relief with some leaf
abscission markings on the left and imprint of Cardiocarpus (?), (Let the mouse
move over the picture to help you see.) coll. A.MARSCHINKE/Berlin
(AWM 0304),
width of scale bar = 1cm.