Order (Haeckel, 1862): Without a test.
Family (Loeblich & Tappan, 1961): Body mass changeable in form.
Genus: (Cash & Wailes, The British Freshwater Rhizopoda and Heliozoa vol. III, 1915).

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C. montana ? μm Omine-numa 6 Minakami Gunma, 2007

C. labyrinthuloides ? μm Kareki-numa Nikko Tochigi, 2008

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