Neosemantis distephanus

Sub-taxa & variants (time control age-window is: 0-800Ma)
				Neosemantis distephanus distephanus neptune records:

Taxonomy

Catalog entries: Neosemantis distephanus

Original description: Die drei Halbringe sind sämtlich dreikantig bis dreiflügelig und namentlich in den in der Abbildung nach oben gekehrten Teilen mit kräftigen, langen Stacheln bewehrt. Die dreikantigen Skelettbalken sind sämtlich so orientiert, daß sie eine Kante nach außen, zwei seitlich strecken, so daß sie mit einer breiteren Fläche nach dem Hohlraum des Skelettes zeigen. Nach dem unteren Pole zu werden die Stacheln kürzer. Auch sind die Halbringe am oberen Pole mehr gebogen als am unteren, weshalb der obere etwas eingesenkt, der untere etwas zugespitzt erscheint.


Translated description: The three half rings are all triangular to three-winged and are reinforced with strong, long spines, especially in the parts that are turned upwards in the illustration. The triangular skeleton beams are all oriented in such a way that they extend one edge outwards and two laterally, so that they have a wider surface pointing towards the cavity of the skeleton. Towards the lower pole the spines become shorter. The half rings on the upper pole are also more curved than on the lower one, which is why the upper one appears somewhat sunken and the lower one appears somewhat pointed.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested.
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Neosemantis

Neosemantis distephanus compiled by the radiolaria@mikrotax project team viewed: 16-8-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204730 Go to Archive.is to create a permanent copy of this page - citation notes

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