Arcella Visual Key – Microworld

Microworld

world of amoeboid organisms

Ferry Siemensma, created March 4, 2019; last modified October 20, 2025

Recent posts

Freshwater foraminifera from Ireland

September 1, 2025

Unknown species Freshwater foraminifera from

Frenopyxis laevigata

August 8, 2025

F. laevigata, after Penard, 1902

Argynnia oblonga

July 31, 2025

A. oblonga , from Gauthier-Lièvre,

Limnogromia Oosterplas

July 27, 2025

Limnogromia sp., 320 µm long.

Poseidonella

June 13, 2025

Poseidonella transaquatica Poseidonella Holzmann &

Darbyshirella video

May 9, 2025

Courtesy Veselin Andreev Darbyshirella species?