P447Ho, fossiliferous chert from Schallodenbach, detail
Fig.2: A segmented axis is seen extending from below left to
above right. The nodes
bear rather long leaves whose sections are still found at some distance from
the axis
(left, centre, and above right). Remarkable are cavities between leaves and
axis,
possibly serving as enclosures for sporangia. coll. R.KRETZSCHMAR/Chemnitz