Axial section

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Fig. 1. Sections of Involutina liassica (Jones). Middle Lias, from Arzo, Ticino, Southern Switzerland. Transparent light micrographs. Involutina exhibits a lamellar-perforate, planispiral-evolute, dimorphic shell with a spherical megalosphere followed by a tubular chamber cavity without septa. Lateral walls ornamented by protuberant piles between coarse pores. Double arrow: shell axis. a: axial section; e: equatorial section; o: oblique section; oc: oblique-centered section; ta: tangential section; tr: transverse section; (Hottinger, 2006; fig. 15)[1] CC/BY-NC-SA)

Definition

  • according to Hottinger (2006):

AXIAL SECTION - a slice bisecting the test in a plane coinciding with the axis of coiling and intersecting the proloculus.


See also

References

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

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