radiolaria - rads_cenozoic - Phormocyrtis embolum radiolaria - rads_cenozoic - Phormocyrtis embolum

Phormocyrtis embolum

Classification: rads_cenozoic -> Pterocorythidae -> Phormocyrtis -> Phormocyrtis embolum
Sister taxa: P. alexandrae, P. cubensis, P. embolum, P. ligulata, P. proxima, P. striata, P. turgida, P. sp.


Citation: Phormocyrtis embolum Ehrenberg 1873
taxonomic rank: species
Basionym: Phormocyrtis embolum
Taxonomic discussion: Ehrenberg, 1873, p.228

Catalog entries: Eucyrtidium embolum

Original description: [3-segmented, smooth, with cephalis subglobose and not porous, terminating in a strong spine (broken), with a large, hyaline, median spot. Second segment constricted anteriorly, and dilated from the middle, sublageniform, passing into the third segment without strictures. Third segment narrower posteriorly and then cylindro-conical, the posterior margin torn (or truncate ?). Smooth surface ribs provided with a single row of pores ornament both segments of the shell. Total length 175 µ, of the cephalis 28 µ, of second segment 56 µ, of third segment 86 µ. (Translated from Latin by E.M.R. and W.R.R.)]


Biogeography and Palaeobiology

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:


Ehrenberg, C. G. (1874b). Grössere Felsproben des Polycystinen-Mergels von Barbados mit weiteren Erläuterungen. Monatsberichte der Koniglichen Preussische Akademie der Wissenschaften zu Berlin. 1873: 213-263. gs


Phormocyrtis embolum compiled by the radiolaria@mikrotax project team viewed: 16-6-2024

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