pforams@mikrotax - Sigalia carpatica

Sigalia carpatica


Classification: pf_mesozoic -> Heterohelicidae -> Sigalia -> Sigalia carpatica
Sister taxa: S. carpatica, S. decoratissima, S. deflaensis, S. rugocostata, S. sp.

Taxonomy

Citation: Sigalia carpatica Salaj and Samuel, 1963
Rank: Species
Basionym: Sigalia decoratissima carpatica
Synonyms:

Type images:

Original description: Diagnosis: Schale biserial gebaut, in jeder Reihe etwa 5—7 Kammerchen. Suturlinien limbat, mit verlängerten Verzierungen versehen. Mundung halbkreisíormig auf der Basis der letzten Kammer.

Description: Schale kalkig, ganz gebaut; Kammerchen von beiden Seiten zusammengedruckt; Septen limbat, gebogen und uber die Skulptúr der Kammerchen stark emporragend. Mehr als 2/3 der Schale ist durch verlängerte stumpfe (abgerundete) Knollen verziert. Am Rande der letzteren zwei alternierenden Kammerchen sind „Säume", zwischen welchen die oberen Kammerwände in Form von kleinen Kehlen vertieft sind. Die Mundung ist halbkreisíormig an der Basis der letzten Kammer.

Entries in the Catalog of original descriptions: Sigalia carpatica


Emended description:

Test biserial throughout; chambers gradually increasing in size when added. Shoulder of each chamber bordered by two imperforate rims, one on each side of the test, that in older chambers appear as limbate, beaded sutures. Surface in between sutures smooth, with scattered medium sized pores. Aperture bordered by a rim. [copied from Chronos database]

Morphology:

Wall type:

Size:

Character matrix
test outline:Subtriangularchamber arrangement:Biserialedge view:Compressedaperture:Interiomarginal
sp chamber shape:Petaloidcoiling axis:N/Aperiphery:N/Aaperture border:Thin flange
umb chbr shape:Petaloidumbilicus:N/Aperiph margin shape:Narrowly roundedaccessory apertures:N/A
spiral sutures:Raised beadedumb depth:N/Awall texture:Smoothshell porosity:
umbilical or test sutures:Raised beadedfinal-whorl chambers:2.0-2.0 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within D. asymetrica zone (84.19-86.71Ma, top in Santonian stage). Data source: [copied from Chronos database]
First occurrence (base): within D. concavata zone (86.71-89.91Ma, base in Turonian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

References:

Salaj, J. & Samuel, O. (1963). Mikrobiostratigrafia strednej a vrchnej kriecly z vychodnej casti bradloveho pasma. [Microbiostratigraphy of the middle and upper Cretaceous from the eastern part of the Pieniny Klippen Belt.]. Geologicke Prace, Spravy. 30: 93-112. gs V O


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Sigalia carpatica compiled by the pforams@mikrotax project team viewed: 28-9-2022

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110530 Go to Archive.is to create a permanent copy of this page - citation notes



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