P308Ho, chert from the Altenburg-Nobitz gravel pit
Lycophyte cortex (?Subsigillaria brardii, Syringodendron sp.),
radial cut with clearly seen cortex surface
as a bright undulating contour and the paired leaf traces as dark curved lines
turning towards
below right, coll. KRETZSCHMAR/Chemnitz, sample width
about 18 cm