View source for Morphogenesis

=== Chamber formation ===

Foraminifera grow by a process of discrete stepwise additions of elements to an already existing morphology.

[[Image:ChamberFormGrell.jpg|thumb|left|600px|<font size="2">'''Formation of a new chamber''' in trochospiral ''Discorbis bertheloti'' . A – fan-shaped rhizopodia spreading from the aperture located on the opposite (umbilical) side; B – retraction of rhizopodia; C – secretion of a new chamber. Scale-bar = 0.5 mm (from [[REFERENCES|Tyszka et al., 2005]] - fig. 3, after Grell, 1978, and Le Calvez, 1938, modified)</font>]]