Distinctly coiled microspheric tests are as much as 2 mm wide and 1.6 mm high.
2.
The microspheric test begins with a short planispiral stage, later chambers spreading successively from flabeilliform ( fan-shaped ) to reniform ( kidney-shaped ) and finally annular.
3.
Irregular coiling is found in the first volutions in the microspheric forms of most genera, indicating a close relationship with the Miliolidae . " Alveolinella " is an exception as the proloculus in the microspheric form is perforate and the first volutions are peneroplid in character, suggesting it, " Alveolinella ", may have a different origin than the other alveolinids.
4.
Irregular coiling is found in the first volutions in the microspheric forms of most genera, indicating a close relationship with the Miliolidae . " Alveolinella " is an exception as the proloculus in the microspheric form is perforate and the first volutions are peneroplid in character, suggesting it, " Alveolinella ", may have a different origin than the other alveolinids.