Sigmoilinita

Sigmoilinita
Temporal range: Miocene - Recent
Scientific classification
(unranked):
SAR
(unranked):
Rhizaria
Phylum:
Foraminifera
Class:
Tubothalamea
Order:
Miliolida
Family:
Hauerinidae
Genus:
Sigmoilinita

Seiglie, 1965

Sigmoilinita is a miliolid genus (Foraminifera) with an ovate to fusiform test that becomes flattened with growth. Chambers are tubular, one-half coil in length, at first added in a sigmoiline (S-shaped) series starting at slightly more than 180° apart. the angle gradually decreasing until the later whorls are planispiral. Chambers are numerous, the wall narrow. imperforate, porcelaneous. The aperture at the end of the final chamber may have a weakly developed tooth.

References

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