CATALOG OF ORIGINAL DESCRIPTIONS: Sethopyramis aneotos Clark & Campbell 1945

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: rads_cat -> S -> Sethopyramis -> Sethopyramis aneotos
Other pages this level: S. acuticephala, S. akanthodes akanthodes, S. akanthodes leptopleura, S. aneotos, S. bicornis, S. cyclomma, S. dodecalactis, S. enneactis, S. fenestrata, S. hexagonalis, S. hexalactis, S. lucerna, S. magnifica, S. maxima, S. pulcherrima, S. quadrata [sec. junior hom], S. scalariformis, S. septimoangularis, S. spinosa, S. trapezoides, S. victori

Sethopyramis aneotos

Citation: Sethopyramis aneotos Clark & Campbell 1945
Rank: species
Type locality: LL598
Type specimens: pl.7, fig.34
Described on page(s) : p.39

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Current identification:

Original Description
Shell with 8 or 9 flat sides and a minute, smooth, poreless cephalis having a rounded top and subparallel sides and being pinched off at the base from the thorax, its cavity following the outer contour; wide, pyramidal thorax (65° as a whole) apically truncated, formed by the union of facets each of which has at least 8 (and probably more in complete specimens) thick, transverse beams which are nearly directly opposite in regular tiers like the steps of a ladder; the rectangles thus formed by beams and radial apophyses are rounded at the corners, the uppermost 2 or 3 windows thus formed being very nearly bean-shaped with the hylum ventral; the other windows display some tendency toward that shape in less degree; the beams and radial apophyses are all rounded and toothless; the windows are regularly graded in size from small at the apex to large at the aperture; none of them has enclosed subdivisions.

Size: Total length of broken specimen 120µm of cephalis 10µm; greatest breadth 60µm.

Etymology: No information given

Extra details from original publication
Distinguishing features: This new species differs from magnifica Clark and Campbell (1942) in peglike rather than round cephalis, in thorax which in this new species tends to be angulated at about 0.5 its length, in bean-shaped rather than rectangular windows, in lack of arachnoi

Editors' Notes
The authors here list Sestropyramis aneotos under the subgeneric name Cephalopyramis and include the subgeneric name in the species name.[comment from RadWorld database]


Clark, B. L. & Campbell, A. S. (1945). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. 1-66. gs


Sethopyramis aneotos compiled by the radiolaria@mikrotax project team viewed: 18-6-2021

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