Sethochytris babylonis

Classification: rads_cenozoic -> Theoperidae -> Sethochytris -> Sethochytris babylonis
Sister taxa: S. babylonis, S. chrysallis, S. sp.


Citation: Sethochytris babylonis (Clark and Campbell) Riedel and Sanfilippo 1970
Rank: species
Basionym: Dictyophimus babylonis Clark & Campbell 1942

Catalog entries: Dictyophimus babylonis

Original description: Shell smooth, generally pyramidal, with long, stout, conical, apical horn, surface minutely and irregularly pitted, about four times its basal diameter in length and 0.7 length of a foot; cephalis truncate-conical, its sides slightly and asymmetrically swollen, its cavity strongly globose, its aperture wide, the walls distally thick, thinner proximally, the surface of the same texture as the horn from which it is scarcely outwardly differentiated; thorax strongly truncate-conical, as a whole markedly triangular, with three, vertical, equal, equidistant angles which arise obscurely just below the cephalis and increase in development as they progress toward the peristome, these angles forming the bases from which the feet arise at the widest level of the thorax, the thorax contracted below the long, distal (0.67 length of thorax as a whole), conical region as an inverted, truncated, low cone whose base forms the widest part of the body, and the apical part forms the aperture of the shell, the surface of the thorax with regular rows of fairly large, circular pores, with concave sides, the base of the pore sunken well below the outer surface of the relatively thick wall, the pores numbering about a dozen in a vertical row; feet three, formed from the three angles of the thorax, the feet conical, strong, much curved inwardly, their bases with several longitudinal fins or thickened ridges which are decurrent, the remainder of the foot of the same texture as the horn and cephalis, circular in cross section; aperture of the shell circular, simple, its margin thick.
Remarks on original description: The authors here list this species under the subgeneric name Dictyophimium and include the subgeneric name in the species name.
Renamed as Lychnocanomma babylonis by Riedel and Sanfilippo, 1970, and Sethochytris babylonis by Riedel and Sanfilippo, 1971[comment from RadWorld database]


Biogeography and Palaeobiology

Similar species: babylonis

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"

Plot of occurrence data:



Sethochytris babylonis compiled by the radiolaria@mikrotax project team viewed: 12-4-2021

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