foraminiferon

— In this process in foraminifera the nuclear fragmentation which Hertwig described in Actinosphaerium, and which Schaudinn identified with “Chromidien”-formation, is evidently the same thing as these processes which Carter and Wallich observed long ago and vaguely interpreted as reproductive processes.[…]In some cases, as for example in Polystomella, the nucleus after fertilization multiplies by division until there are many of them in the young chambers of the developing foraminiferon.