Monatsberichte (monthly reports) der Deutschen Geologischen Gesellschaft (ISSN: 2943-3533)

Monatsberichte der Deutschen Geologischen Gesellschaft (monthly reports of the German geological Society) were published alongside Zeitschrift der Deutschen Geologischen Gesellschaft/Journal of the German Geological Society (which was issued once annually then) every month from volume 55 (1903) to volume 62 (1910/1911).
Monatsberichte were later superseded by Zeitschrift der Deutschen Geologischen Gesellschaft B, Monatsberichte from volume 63 (1912) on until volume 80 (1928/29).