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Helvetoglobotruncana

Hedbergellidae

Taxonomy
Helvetoglobotruncana was named by Reiss (1957). It was considered unknown by Loeblich and Tappan (1988).

It was assigned to Helvetoglobotruncaninae by Reiss (1957) and Loeblich and Tappan (1988).

Synonymy list
YearName and author
1957Helvetoglobotruncana Reiss
1988Helvetoglobotruncana Loeblich and Tappan

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RankNameAuthor
kingdomChromistaCavalier-Smith 1981
subkingdomRhizaria()
phylumForaminifera(Eichwald 1830)
suborderGlobigerininaDelage and Herouard 1896
RankNameAuthor
superfamilyRotaliporaceaSigal 1958
familyHedbergellidaeLoeblich and Tappan 1961
subfamilyHelvetoglobotruncaninaeLamolda 1976
genusHelvetoglobotruncanaReiss 1957

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Helvetoglobotruncana Reiss 1957
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Diagnosis
ReferenceDiagnosis
A. R. Loeblich and H. Tappan 1988Test flatly trochospiral; chambers globular, slightly to strongly flattened on the dorsal side; keel dorsal, not necessarily peripheral (sub-peripheral keel) at the margin of the flattened part of the chamber-wall with r dorso-septal branches and never dichotomic; keels granular to subspinose; cameral aperture umbilical, extending slightly into a partly interiomarginal position; labial apertures interiomarginal-umbilical-sutural (latter part often reduced through partial fusion of the lips); lips very slightly, if at all arched lengthwise, covering partly the umbilical cavity.
Measurements
No measurements are available
Composition: low Mg calcitesubo
Environment: marinesubo
Locomotion: stationaryo
Life habit: planktonicsubo
Diet: omnivoreo
Created: 2007-11-25 07:28:24
Modified: 2007-11-25 09:28:24
Source: subo = suborder, o = order
References: Loeblich and Tappan 1984, Kiessling 2004

Age range: base of the Middle Turonian to the top of the Turonian or 93.50000 to 89.80000 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Cenomanian - Late/Upper Turonian99.6 - 89.3Tanzania (Lindi) H. helvetica (179874)
Turonian93.9 - 89.8United Kingdom H. helvetica (57534 57535)
Early/Lower Turonian93.5 - 89.3Tanzania (Lindi) H. helvetica (179875)
Early/Lower Turonian - Late/Upper Turonian93.5 - 89.3Tanzania (Lindi) H. helvetica, H. praehelvetica (179314)
Early/Lower Turonian - Middle Turonian93.5 - 89.3Egypt H. helvetica, H. praehelvetica (138419) H. praehelvetica (138418)
Early/Lower Turonian - Middle Turonian93.5 - 89.3Tanzania (Lindi) H. helvetica (179313) H. helvetica, H. praehelvetica (179309 179312) H. praehelvetica (179882)
Middle Turonian93.5 - 89.3Poland H. helvetica (97983)