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Arcella (Testate Amoeba)

Arcella sp. test, oral surface, with Cocconeis diatoms living inside. Brown color is iron rust.
Common in freshwater ponds in New England, USA

Arcella sp. test, oral surface, Willand Pond, Durham, NH USA. Red color is iron rust.
Photo by Amanda Murby, University of New Hampshire, Durham, NH USA

Arcella dentata
Photograph by Kora posted online

Arcella dentata
Photograph by Antonio Garrigós posted online

Arcella gibbosa
Photograph posted online

Arcella gibbosa
Photograph by Wolfgang Bettighofer posted online

Arcella sp. with a clear lorica showing pseudopods
Photograph by Franz Neidl (Italy) posted online

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