Biloculine

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Fig. 1. Milioline coiling. Schematic, not to scale. Note the coiling mode: only two chambers per whorl. Chamber lumina green, coiling axes black. Foramina aligned in the apertural axis (red). A: quinqueloculine mode of coiling: for each new chamber the coiling axis rotates 72° around the apertural axis. B: triloculine mode of coiling: for each new chamber the coiling axis rotates 120°. C: biloculine mode of coiling: the coiling axis does not rotate. a: aperture; cax: coiling axis; chs: chamber suture; mt: miliolid tooth; (Hottinger, 2006; fig. 68 [1] CC/BY-NC-SA)

Definition

  • according to Hottinger (2006):

BILOCULINE - see milioline coiling.


References

Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744

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