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