chert from Altenburg - Nobitz gravel pit, drawing
Drawn top view on chert surface with Subsigillaria brardii,
cortex relief with a lot
of leaf abscission markings (quincunx!) on the left and two imprints of Cardiocarpus
(?),
coll. A.MARSCHINKE/Berlin (AWM 0304), width of scale
bar = 1cm.