radiolaria - rads_cenozoic - Theocyrtis tuberosa radiolaria - rads_cenozoic - Theocyrtis tuberosa

Theocyrtis tuberosa

Classification: rads_cenozoic -> Pterocorythidae -> Theocyrtis -> Theocyrtis tuberosa
Sister taxa: T. annosa, T. careotuberosa, T. diabloensis, T. litos, T. perpumila, T. perysinos, T. robusta, T. setanios, T. tuberosa, T. sp.


Citation: Theocyrtis tuberosa Riedel 1959
taxonomic rank: species
Basionym: Theocyrtis tuberosa
Taxonomic discussion: Riedel 1959 p.298 pl.2 figs.10-11; Sanfilippo et al. 1985 p.701-702 figs.32.1a-d

Catalog entries: Theocyrtis tuberosa

Original description: Cephalis elongate, subdivided into three (?) indistinct loculi, with rough surface and subcircular to circular pores. Apical horn short, stout, three-bladed, often irregular in form or forked. Thorax subhemispherical, with pronouncedly tuberose surface due to low irregular protuberances, and subcircular to circular pores showing a tendency to longitudinal alignment. Lumbar stricture indistinct externally. Abdomen subcylindrical, somewhat contracted distally, usually with ragged termination, and having a plicate wall in which adjacent plicae are separated by two to four longitudinal rows of subcircular to circular pores.


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:


Riedel, W. R. (1959a). Oligocene and Lower Miocene Radiolaria in tropical Pacific sediments. Micropaleontology. 5(3): 285-302. gs

Sanfilippo, A., Westberg-Smith, M. J. & Riedel, W. R. (1985b). Cenozoic Radiolaria. In, Bolli, H. M. , Saunders, J. B. & Perch-Nielsen K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 631-712. gs


Theocyrtis tuberosa compiled by the radiolaria@mikrotax project team viewed: 25-6-2024

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