Description of Arcella artocrea
provided by BioPedia
Testate amoeba, organic test, with lobose pseudopodia emerging from central basal aperture. The shell is brown, circular and has a conical aboral region which is often covered by dents or depressions. The basal collar is usually prominent and smooth. The aperture is invaginated, circular, has a small lip and is surrounded by about thiry large and some small pores. Diameter of shell 184-216 microns, depth 46-64 microns, diameter of aperture 36-42 microns
