Time table of embryogenesis

Stage Time Developmental events
1- 4
0:00 - 2:10 h
Cleavage
5
2:10 - 2:50 h
Blastoderm
6 - 7
2:50 - 3:10 h
Gastrulation
8 - 11
3:10 - 7:20 h
Germ band elongation
12 - 13
7:20 - 10:20 h
Germ band retraction
14 - 15
10:20 - 13:00 h
Head involution and dorsal closure
16 - 17
13:00 - 22:00 h
Differentiation