Neosemantis hofferti

Taxonomy

Catalog entries: Neosemantis hofferti

Original description: Skeleton consists of cephalic elements andtheir associated spicules; no lattice shell. Apical and two primary lateral apophyses of equal length, 95-136m long, 7-9µm in diameter, distinctively tribladed in cross section. Frontal apophyse somewhat shorter, 74-98µm long, but otherwise identical to primary lateral apophyses. All apophyses radiate from short (10µm), round median bar, which bears a small spine-like axobate (pl. 3, fig. 3). Frontal and primary lateral apophyses lie in horizontal plane with median bars. Apical apophyse is slghtly arched, with convex side towards the front. Spicules 12-30µm long projectradially from the three ridges along the margins of each apophyse. These spicules are arranged in sets of regular verticils consisting of three spicules and spaced at intervals of 20-30µm along each apophyse. All specimens have a simple, well-developed vertical spine 18-32µm long, with or without profusion of micronodes.

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 hofferti 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=204732 Go to Archive.is to create a permanent copy of this page - citation notes

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