Class: Astrorhizata    Subclass: Astrorhizana    Order: Saccamminida    Family: Stegnamminidae
Thekammina quadrangularis Dunn, 1942
     Morphological Attributes:
Wallmaterial:
Overall appearance:
Coiling:
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Aperture Form: , , ,
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identified by scientist

Silurian
Upper Silurian

Midwestern USA

FEU-1013616