pforams@mikrotax - Truncorotaloididae

arrayname: original

pforams@mikrotax - Truncorotaloididae pforams@mikrotax - Truncorotaloididae

Truncorotaloididae

Classification: pf_cenozoic -> Truncorotaloididae
Sister taxa: Globigerinidae, Globorotaliidae, Hantkeninidae, Truncorotaloididae, Globanomalinidae, Genera incertae sedis ⟩⟨ Hastigerinidae ⟩⟨ Globigerinitidae, Candeinidae, Antarcticella ⟩⟨ Guembelitrioidea, Benthic origins, hidden

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Alicantina	Alicantina prolata Alicantina lozanoi
	Acarinina Moderate to low trochospire; chambers ovoid, usually 4-6 in final whorl. Wall muricate with pustules on umbilical shoulders;	Acarinina aquiensis Acarinina medizzai Acarinina collactea Acarinina pentacamerata Acarinina aspensis Acarinina interposita Acarinina echinata Acarinina pseudosubsphaerica Acarinina alticonica Acarinina soldadoensis Acarinina cuneicamerata Acarinina angulosa Acarinina africana Acarinina sibaiyaensis Acarinina esnehensis Acarinina mckannai Acarinina subsphaerica Acarinina bullbrooki Acarinina punctocarinata Acarinina boudreauxi Acarinina rohri Acarinina topilensis Acarinina praetopilensis Acarinina mcgowrani Acarinina quetra Acarinina pseudotopilensis Acarinina wilcoxensis Acarinina esnaensis Acarinina primitiva Acarinina coalingensis Acarinina nitida Acarinina strabocella Acarinina sp.
	Praemurica Test very low trochospiral, usually 5-6, globular to oval chambers in last whorl, periphery lobulate; Wall non-spinose, weakly cancellate;	Praemurica uncinata Praemurica inconstans Praemurica pseudoinconstans Praemurica taurica Praemurica nikolasi Praemurica sp.
	Test biconvex
	Igorina Test small, biconvex, evolute, margin narrowly rounded or angular, sometimes with a keel; 5-6 chambers in final whorl Wall, coarsely cancellate, praemuricate, often pustulose.	Igorina tadjikistanensis Igorina albeari Igorina pusilla Igorina sp.
	Pearsonites small Morozovellids with biconvex–planoconvex tests with an overall rounded periphery	Pearsonites anapetes Pearsonites broedermanni Pearsonites lodoensis
	Planorotalites Biconvex, keeled test with densely perforate surface	Planorotalites capdevilensis Planorotalites pseudoscitula Planorotalites sp.
	Astrorotalia Low trochospiral test with keel-spines	Astrorotalia palmerae Astrorotalia sp.
	Test plano-convex
	Morozovella Test typically plano-convex, chambers strongly anguloconical. Wall strongly pustulose (muricate) on parts of spire and umbilicus. Most species with muricocarina.	Morozovella caucasica Morozovella crater Morozovella aragonensis Morozovella lensiformis Morozovella marginodentata Morozovella formosa Morozovella gracilis Morozovella subbotinae Morozovella aequa Morozovella apanthesma Morozovella edgari Morozovella allisonensis Morozovella acuta Morozovella occlusa Morozovella acutispira Morozovella pasionensis Morozovella velascoensis Morozovella conicotruncata Morozovella angulata Morozovella praeangulata Morozovella sp.
	Morozovelloides Like Morozovella, but derived from Acarinina.	Morozovelloides lehneri Morozovelloides coronatus Morozovelloides crassatus Morozovelloides bandyi Morozovelloides sp.

Taxonomy

Citation: Truncorotaloididae Loeblich&Tappan, 1961

Taxonomic rank: family

Taxonomic discussion: This family tentatively includes Acarinina, Igorina, Morozovella, and Praemurica. As discussed in "Phylogeny," there are two views among the working group members on the relationships between these genera (see Figure 5a, b). The use of this family appears appropriate, for the time being, until these differences are resolved. [Olsson et al. 1999]

Catalog entries: Truncorotaloididae

Distinguishing features:
Parent taxon (pf_cenozoic): This is a polyphyletic grouping including all Cenozoic planktonic foraminifera
This taxon: Muricate

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

Diagnostic characters:

Test, a low to moderately elevated trochospire, with or without peripheral keel; chambers globular to conical shaped; wall cancellate to muricate, pustule growth moderate to heavy, usually around umbilical area or along a peripheral keel; aperture interiomarginal, umbilical-extraumbilical, with or without lip, may have supplementary apertures. [Berggren et al. in Olsson et al. 1999]

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of O7 zone (100% up, 23Ma, in Aquitanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within P0 zone (66.00-66.04Ma, base in Danian stage). Data source: Total of ranges 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. For the customisable plot option go to a genus page Parent: pf_cenozoic

Primary source for this page: Berggren et al. 2006 - Eocene Atlas, chap. 9, p. 261

References:

Banner, F. T. (1989). The nature of Globanomalina Haque, 1956. Journal of Foraminiferal Research. 19: 171-179. gs

Berggren, W. A., Pearson, P. N., Huber, B. T. & Wade, B. S. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Acarinina. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 9): 257-326. gs O

Loeblich, A. R. & Tappan, H. (1961). Cretaceous planktonic foraminifera: Part I-Cenomanian. Micropaleontology. 7: 257-304. gs

Truncorotaloididae compiled by the pforams@mikrotax project team viewed: 24-3-2025

Taxon Search:

Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=100308 Go to Archive.is to create a permanent copy of this page - citation notes

Add Comment

Comments

No comments yet. Be the first!