pforams@mikrotax - Globigerinoidesella

pforams@mikrotax - Globigerinoidesella pforams@mikrotax - Globigerinoidesella

Globigerinoidesella

Classification: pf_cenozoic -> Globigerinidae -> Globigerinoidesella
Sister taxa: Beella, Globigerina, Globigerinella, Protentella, Quiltyella ⟩⟨ Ciperoella, Globigerinoides, Globigerinoidesella, Globoturborotalita, Orbulina, Praeorbulina, Sphaeroidinella, Sphaeroidinellopsis, Trilobatus, Turborotalita ⟩⟨ Dentoglobigerina, Globoquadrina ⟩⟨ Catapsydrax, Clavatorella, Paragloborotalia, Protentelloides ⟩⟨ Eoglobigerina, Globigerinatheka, Globorotaloides, Guembelitrioides, Orbulinoides, Parasubbotina, Pseudoglobigerinella, Subbotina

Daughter taxa (time control age-window is: 0-800Ma)
			Globigerinoidesella fistulosa Final chambers compressed and radially elongate with multiple slender digitate extensions.
			Globigerinoidesella sp. Specimens which cannot be assigned to established species

Taxonomy

Citation: Globigerinoidesella El-Naggar 1971

Rank: genus

Type species: Globigerina fistulosa Schubert 1910

Catalog entries: Globigerinoidesella

Distinguishing features:
Parent taxon (Globigerinidae): Wall spinose, usually with 3½-6 globular chambers in final whorl, trochospiral or planispiral
This taxon: Supplementary apertures, cancellate wall & elongate extensions to final chamber.

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description

Biogeography and Palaeobiology

Geographic distribution

Most likely ancestor: Trilobatus - at confidence level 4 (out of 5). Data source: Kennett & Srinivasan 1983; Spezzaferri et al. 2015.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): near top of Gelasian Stage (91% up, 1.9Ma, in Gelasian stage). Data source: Total of range of species in this database
First occurrence (base): at top of Piacenzian Stage (99% up, 2.6Ma, in Piacenzian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Globigerinidae

References:

El-Naggar, Z. R. (1971a). On the classification, evolution and stratigraphical distribution of the Globigerinacea. In, Farinacci, A. (ed.) Proceedings of the Second Planktonic Conference, Roma 1970. Edizioni Tecnoscienza, Rome 421-476. gs