Globigerinina

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Globigerinina
Temporal range: Toarcian–Recent
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Phylum: Retaria
Subphylum: Foraminifera
Class: Globothalamea
Order: Rotaliida
Suborder: Globigerinina
Delage & Hérouard, 1896
Superfamilies

The Globigerinina is a

ooze
(named by Murray and Renard in 1873), dominated by the shells of planktonic forms.

Description

Globigerinids are characterized by distinctly perforate planispiral or trochospiral tests composed of lamellar radial hyaline (glassy) calcite, with typically globular chambers and single interiomarginal aperture. Some however have multiple or auxiliary apertures, and in some the aperture is areal or terminal in location. Some, also, have keels, reinforcing thickenings along exterior angles. An adaptation to the planktonic habit is the development of long narrow spines that support a frothy buoyant ectoplasm.

Superfamilies and families

The Globigerinina are now divided into these superfamilies and families:[1]

References

  1. ^ Rotaliida, World Foraminifera Database, accessed 27 November 2018

External links