 The block comes from the vicinity Schwarzenbach am Wald from the so-called Heinersreuth Block Conglomerate ("Heinersreuther Blockkonglomerat"), a Lower Carboniferous wildflysch.However, the aforementioned archaeocyathids are not three-dimensional fossils, but two-dimensional thin sections.These thin sections had already been prepared and investigated in the 1970s but the archaeocyathids among them were apparently overlooked at that time.