fossiliferous cherts from the type locality of Scolecopteris near Freital
Recently collected samples of various varieties of fossiliferous
cherts from
the Freital locality, which are also found in HEINRICH
COTTAīs Ruedigsdorf
collection, serving as an additional indication of erroneous labelling.
coll. KRETZSCHMAR/Chemnitz, width of the picture 27 cm