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Carpocanium spp. (Figure 3E, 15.170) [=Carpocanistrum spp.].
Shell outline subspherical to oval. Cephalis
indistingishable from thorax, included within its upper
part. Peristome poreless, smooth or provided with teeth.
Height of shell: 80-130 µm. Ref: Nigrini and Moore
(1979).
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