pforams@mikrotax - Schackoina sp. pforams@mikrotax - Schackoina sp.

Schackoina sp.


Classification: pf_mesozoic -> Schackoinidae -> Schackoina -> Schackoina sp.
Sister taxa: S. bicornis, S. cenomana, S. multispinata, S. sp.

Taxonomy

taxonomic rank: generic level id

Entries in the Catalog of original descriptions:

Distinguishing features:
Parent taxon (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.
This taxon: Specimens which cannot be assigned to established species

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).

Plot of range and occurrence data:

References:


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Schackoina sp. compiled by the pforams@mikrotax project team viewed: 21-4-2024

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110527 Go to Archive.is to create a permanent copy of this page - citation notes



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