pforams@mikrotax - Truncorotaloididae

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	A. prolata A. lozanoi
	Acarinina Moderate to low trochospire; chambers ovoid, usually 4-6 in final whorl. Wall muricate with pustules on umbilical shoulders;	A. medizzai A. collactea A. pentacamerata A. aspensis A. interposita A. echinata A. pseudosubsphaerica A. alticonica A. soldadoensis A. cuneicamerata A. angulosa A. africana A. sibaiyaensis A. esnehensis A. mckannai A. subsphaerica A. bullbrooki A. punctocarinata A. boudreauxi A. rohri A. topilensis A. praetopilensis A. mcgowrani A. quetra A. pseudotopilensis A. wilcoxensis A. esnaensis A. primitiva A. coalingensis A. nitida A. strabocella A. sp.
	Praemurica Test very low trochospiral, usually 5-6, globular to oval chambers in last whorl, periphery lobulate; Wall non-spinose, weakly cancellate;	P. uncinata P. inconstans P. pseudoinconstans P. taurica P. nikolasi P. 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.	I. tadjikistanensis I. albeari I. pusilla I. sp.
	Pearsonites small Morozovellids with biconvex–planoconvex tests with an overall rounded periphery	P. anapetes P. broedermanni P. lodoensis
	Planorotalites Biconvex, keeled test with densely perforate surface	P. capdevilensis P. pseudoscitula P. sp.
	Astrorotalia Low trochospiral test with keel-spines	A. palmerae A. 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.	M. caucasica M. crater M. aragonensis M. lensiformis M. marginodentata M. formosa M. gracilis M. subbotinae M. aequa M. apanthesma M. edgari M. allisonensis M. acuta M. occlusa M. acutispira M. pasionensis M. velascoensis M. conicotruncata M. angulata M. praeangulata M. sp.
	Morozovelloides Like Morozovella, but derived from Acarinina.	M. lehneri M. coronatus M. crassatus M. bandyi M. sp.

Taxonomy

Citation: Truncorotaloididae Loeblich and Tappan, 1961

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 gruoping 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

Emended description:

Morphology:

Wall type:

Size:

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at base of Aquitanian Stage (3% up, 23Ma, in Aquitanian stage). Data source: Total of range of species in this database
First occurrence (base): within Danian Stage (61.61-66.04Ma, base in Danian 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. 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 V 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: 25-5-2022

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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

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