| The shortening of the amphiaster central shaft may represent an essential and preliminary stage to the appearance of euasters. |
| While these changes are going on in the chromatin the amphiaster forms. |
| Thrombidae species have a unique type of amphiaster with recurved spines at each end, not found anywhere else in the Astrophoridap. |
| As the amphiaster grows the centrosomes are grouped in a plane at the equator of the spindle, forming the Equatorial Plate. |
