pforams@mikrotax - Schackoinidae

pforams@mikrotax - Schackoinidae pforams@mikrotax - Schackoinidae

Schackoinidae

Classification: pf_mesozoic -> Schackoinidae
Sister taxa: Guembelitriidae ⟩⟨ Heterohelicidae ⟩⟨ Planomalinidae, Globigerinelloididae, Schackoinidae ⟩⟨ Conoglobigerinidae, Chilostomellidae, Favusellidae, Praehedbergellidae, Hedbergellidae, Rugoglobigerinidae, Rotaliporidae, Globotruncanidae, hidden

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Leupoldina Test irregular in form, in a low trochospiral coil, early chambers small and subglobular, then rapidly enlarging, becoming radially elongate and tapering distally, chambers of the final whorl clavate, the final one or two chambers commonly with two bulbous projections, one on each side of the median plane, sutures distinct, depressed; wall calcareous, perforate, surface smooth, pitted or hispid; aperture interiomarginal and equatorial, with a narrow bordering lip, final chamber may have an aperture at each side of the median plane.	Leupoldina cabri Leupoldina hexacamerata Leupoldina pustulans Leupoldina quinquecamerata Leupoldina reicheli Leupoldina sp.
	Schackoina Test small, with early low trochospiral stage, later nearly planispiral, early chambers globular, later ones radially elongate and laterally compressed, one or more elongate tubulospines extending from the midline of each chamber on the periphery, biumbilicate, sutures depressed; wall calcareous, very finely perforate, optically radial, surface slightly hispid; aperture a low interiomarginal and equatorial arch bordered by a distinct lip, part of the lateral extensions of the aperture into the umbilicus may remain as relict apertures.	Schackoina bicornis Schackoina cenomana Schackoina multispinata Schackoina sp.

Taxonomy

Citation: Schackoinidae Pokorny 1958

taxonomic rank: Family

Entries in the Catalog of original descriptions: Schackoinidae

Distinguishing features:
Parent taxon (pf_mesozoic):
This taxon: Test trochospiral to nearly planispiral, chambers with one or more hollow tubulospines; aperture equatorial and may have broad lip.

Geological Range:
Last occurrence (top): at top of G. ventricosa zone (100% up, 76.2Ma, in Campanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within L. cabri zone (119.05-120.55Ma, base in Aptian stage). Data source: Total of ranges of species in this database

Plot of range and 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_mesozoic

References:

Loeblich, A. R. & Tappan, H. (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York. 1-1059. gs

Pokorny, V. (1958). Grundzugge der Zoologischen Mikropalaeontologie, Bd. 1. VEB Deutscher Verlag de Wissenschaften., Berlin. -. gs

Schackoinidae compiled by the pforams@mikrotax project team viewed: 14-12-2024

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110528 Go to Archive.is to create a permanent copy of this page - citation notes

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