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Class:
Astrorhizata
Subclass:
Astrorhizana
Order:
Astrorhizida
Family:
Hippocrepinidae
Hyperammina
compacta
Gutschick&Treckmann, 1959
Morphological Attributes:
Wallmaterial:
agglutinated
Overall appearance:
tubular
Coiling:
uniserial
Chamberform:
tubular
Aperture Position:
terminal
Aperture Form:
round oval reniform, --, --, --
Sutures:
--, --, --
Ornamentation:
--, --, --, --
identified by scientist
Carboniferous Mississippian Lower Mississippian
Midwestern USA Missouri and Illinois