Globothalamea

Globothalamea[1] comprises a class of multichambered foraminifera based in part on SSU rDNA evidence;[2] the other is Tubothalamea.

Globothalamea
Temporal range: Devonian? - Recent
Ammonia beccarii
Scientific classification
Clade: SAR
(unranked): Rhizaria
Superphylum: Retaria
Phylum: Foraminifera
Class: Globothalamea
Pawlowski, Holzmann, & Tyszka, 2013
Orders

Six orders are included, which vary notably in composition, wall structure, and chamber arrangement. The Lituolida, Loftusiida, and Textulariida (as emended) have tests (shells) of agglutinated matter, glued together by various cements, but differ in chamber arrangement, wall structure, and complexity. In contrast the Carterinida, Robertinida and Rotaliida, with buliminids lumped into the Rotaliida, have calcareous tests. Those of rotaliid genera, which vary considerably, are of perforate hyaline (glassy) calcite. in contrast the Carterinida, represented by Carterina have tests composed of bundled calcite spicules. The Robertida differ in being composed, instead, of aragonite.[3]

Subclass Textulariia

Unassigned

References
  1. World Foraminifera Database, Foraminifera
  2. Pawlowski, Jan; Holzmann, Maria; Tyszka, JarosΕ‚aw (2013). "New supraordinal classification of Foraminifera: Molecules meet morphology". Marine Micropaleontology. 100: 1–10. doi:10.1016/j.marmicro.2013.04.002.
  3. Foraminifera genera and their description A.R. Loeblich jr & H. Tappan, 1988. e-book.
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