Kleinorganismen als Zerstörer säurefester organischer Substanzen und von Biophosphaten

The present record deals with various kinds of destruction, scars and perforations, caused by bacteria and fungi on microfossils and acid-resistant organic material, as chitinous zoans, pollen and spores, dinoflagellate cysts and related forms. Not seldom the hyphae of fungi are met with, demonstrating their fossil nature by filling with pyrite.

Besides, two different borings in phosphatic shells are described.