CATALOG OF ORIGINAL DESCRIPTIONS: Hantkenina (Cribrohantkenina) Thalmann 1942

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> H -> Hantkenina (Cribrohantkenina)
Other pages this level: Haeuslerina, Haigella, Hantkenina, Hantkenina (Applinella), Hantkenina (Aragonella), Hantkenina (Cribrohantkenina), Hantkenina (Hantkenina), Hartella, Hastigerina, Hastigerina (Bolliella), Hastigerina (Hastigerina), Hastigerinella, Hastigerinella (Hastigerinoides), Hastigerinoides, Hastigerinopsis, Hedbergella, Hedbergella (Asterohedbergella), Hedbergina, Helvetiella, Helvetoglobotruncana, Hendersonia, Hendersonites, Heterohelix, Heterohelix (Pseudoguembelina), Hillsella, Huberella,

Daughter taxa: (blue => in age window 0-800Ma)
= Cribrohantkenina inflata

Hantkenina (Cribrohantkenina)

Citation: Hantkenina (Cribrohantkenina) Thalmann 1942
Rank: sub-genus
Type species: Hantkenina (Sporohantkenina) brevispina Bermudez, 1937

Current identification/main database link: Not linked - add to pf_cenozoic :: pf_mesozoic :: ?

See also: Cribrohantkenina - also used as genus;


Original Description
The subgenus Cribrohantkenina, typified by Hantkenina (C.) bermudezi Thalmann, comprises species with 4 - 5 chambers which increase rapidly in size so that they become inflated, globular, or even bulbose, especially the last-formed chamber, a development suggesting phylogerontism. The sutures are deep, distinct, radiate. Short, stout spines are present on some chambers, but they may be absent or only rudimentarily developed on the last-formed one. When spines are present they are differently situated during the ontogeny of the individual: in early stages they are located on the sutures, but later in life the tests bear spines, (or their rudiments), either at or near the middle of the end-chamber. Aperture trematophorelike, cribrate, number of perforations ("holes") variable (3 to 7, or more), either situated on outer wall of last-formed chamber, or on an apertural plate, which may break-off during burial. The representatives of the subgenus Cribrohantkena are the most specialized species of the genus, and may attain a diameter up to 1,2 mm. The last-formed inflated chamber alone may have sometimes a diameter of 0,6 mm.

Extra details from original publication
Species included by Thalmann 1942:

References:

Thalmann, H. E. (1942). Foraminiferal genus Hantkenina and its subgenera. American Journal of Science. 240: 809-820. gs


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Hantkenina (Cribrohantkenina) compiled by the pforams@mikrotax project team viewed: 29-3-2020

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