Clathrulina elegans
Clathrulina elegans, test 34 µm, stalk 268 µm.

Clathrulinidae Claus, 1874

Diagnosis: Extracellular capsule or lorica attached to substrate, with axopodia emerging from perforations; kinetocyst extrusomes along axopodia; tubular mitochondrial cristae; biciliated and amoeboid stages; can be colonial.

Clathrulina elegans

Clathrulina elegans
Actinosphaeridium pedatus and Hedriocystis pellucida, bar = 10 µm
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