pforams@mikrotax - Truncorotaloididae pforams@mikrotax - Truncorotaloididae


Classification: pf_cenozoic -> Truncorotaloididae
Sister taxa: Globigerinidae, Globorotaliidae, Hantkeninidae, Truncorotaloididae, Globanomalinidae, Genera incertae sedis ⟩⟨ Hastigerinidae ⟩⟨ Globigerinitidae, Candeinidae ⟩⟨ Guembelitrioidea, Benthic origins, hidden
Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa

Alicantina prolata
Alicantina lozanoi

Moderate to low trochospire; chambers ovoid, usually 4-6 in final whorl.
Wall muricate with pustules on umbilical shoulders;

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
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.

small Morozovellids with biconvex–planoconvex tests with an overall rounded periphery
Pearsonites anapetes
Pearsonites broedermanni
Pearsonites lodoensis

Biconvex, keeled test with densely perforate surface
Planorotalites capdevilensis
Planorotalites pseudoscitula
Planorotalites sp.

Low trochospiral test with keel-spines
Astrorotalia palmerae
Astrorotalia sp.

Test plano-convex
Test typically plano-convex, chambers strongly anguloconical.
Wall strongly pustulose (muricate) on parts of spire and umbilicus. Most species with muricocarina.

Like Morozovella, but derived from Acarinina.
Morozovelloides lehneri
Morozovelloides coronatus
Morozovelloides crassatus
Morozovelloides bandyi
Morozovelloides sp.


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.


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:

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


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: 22-5-2024

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