P066Ho, chert from Ruedigsdorf
Chert fracture face, two cortex imprints superimposed (faintly
seen on the left, more distinctly at the centre),
with Syringodendron aspect: paired markings of conducting strands in quincunx
array, also lengthwise running narrow strands,
direction of trunk from below right towards above left, uncommonly large marking
at the centre, due to detached cone?
(Let the mouse move over the picture to help you see.) coll. KRETZSCHMAR/Chemnitz,
max. width of specimen ~ 21cm.