Budding or not?

This is  an image of probably Haynesina germanica . Is was an empty test found in a deposition zone in Poole Harbour. Each Summer these tests and those of some others like Elphidium Williamsoni are found on the shores of the Harbour.

I have always assumed that the capsules were the primary chambers of  a budding adult but I cant find very good images around  the net to confirm this can anyone help . Brian Darnton.

The  foram is ot cleaned  but  mounted in Canada Balsam without pressure  .