Timidonella is a genus of large middle Jurassic forams, with microspheric tests up to 8 millimetres (0.31 in) in diameter.
Smaller megalospheric tests may be fan-shaped or kidney-shaped to discoidal with breadths to slightly over 2 mm and a constant thickness equal to that of the proloculus.
The wall, microgranular calcareous, agglutinated.
[1] Timidonella has been found in the middle Jurassic of France, Italy, Sardinia, Iran, and Madagascar.
[1] Spiraloconulus, Streptocyclammina, and Spirocyclina are among related genera.