Choreotrichida: Tintinnina: Rhabdonellidae

 Protorhabdonella
Jorgensen, 1924

Pandorina Suborder: Sessile.
Family: Lorica acorn- or or chalice-shaped, longitudinal ridges may branch, anastomose.
Genus: Lip of lorica simple, longitudinal ridges simple (Illustrated Guide, 1985).

Protorhabdonella simplex (Cleve), x400, by M. Nakamachi
scale 50 μm scale 100 μm scale 150 μm; x 400
Protorhabdonella
Protorhabdonella striatura Kofoid & Campbell, x400, by M. Nakamachi
Protorhabdonella
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