Catalog - Siderolina cenomana <title>Catalog - Siderolina cenomana

CATALOG OF ORIGINAL DESCRIPTIONS: Siderolina cenomana Schacko 1897

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 -> S -> Siderolina -> Siderolina cenomana
Other pages this level: S. cenomana, S. hamata, S. kochi

Siderolina cenomana

Citation: Siderolina cenomana Schacko 1897
Rank: Species
Type specimens: Not given
Type age (chronostrat): Cenomanian
Type locality: Not designated.
Type repository: Not given

Current identification/main database link: Schackoina cenomana (Schacko, 1897)


Original Description

I have found so far this extremely small Globigerina-like form only in the Cenomanian of Moltzow and the Cretaceous of the borehole Hirschgarten close to Kopenik-Berlin at a depth of 318 meters. The test is built up of eight chambers in 1½ whorls. Embryonic chamber is spherical, as are the next two following chambers. The fourth chamber is totally different in appearance and forms an elongate, pauch-like, slightly compressed funnel-shaped with a radial, long, outward oriented tubular opening; there must be a second connecting opening with the equally pauch-like fifth and also the round third chamber which, however, cannot be clearly seen because of the strong calcification of the small object. Chambers six and seven are similar in shape, but the eight chamber has spherical to irregular bubble-like shape, without a tubular structure to the outside, and it is distinctly drawn with its other opening towards the lower part of the seventh chamber, which, however, covers it in part. The tupe openings of the chambers have different diameters and length, and are either incompletely developed or broken off in part. The length of the large chambers too cannot be determined, for they seem be unify in a common, hollow space. The pauch-like chambers do also not increase always and proportionally in diameter and length. The specimen figured by Moltzow (Fig. IV) lacks the fourth pauch-like chamber. In Fig. V, the communication-connections of all chambers appear so enlarged, that the slightly compressed, funnel-like chambers form possibly only a coherent hollow space and the eigth chamber is here relatively small developed. The perforation is distinctly minute and somewhat more visible on the last chamber.

Size:

Etymology:

Extra details from original publication

Editors' Notes

References:

Schacko, G. (1897). Beitrag uber Foraminiferen aus der Cenoman-Kreide von Moltzow in Mecklenburg. Ver Freunde Naturg Mecklenburg, Archiv, Jahrg. (1896). 50: 161-168. gs


logo

Siderolina cenomana compiled by the pforams@mikrotax project team viewed: 27-1-2023

Taxon Search:
Advanced Search
AphiaID: 898085 Nomenclatural data on WoRMS
Short stable page link: https://mikrotax.org/pforams/index.php?id=132242 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics