Pterocanium praetextum

(Ehrenberg)

Pterocanium praetextum (Ehrenberg) group?

Similar to Pterocanium trilobum, from which it sometimes is difficult to separate; differs by having a thorax with more pronounced, angular shoulders, and often a better developed abdomen. Shell height (without horn and feet): 100-120 µm.

Ref.: Petrushevskaya (1971a).

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