Phormospyris tricostata

Classification: rads_cenozoic -> Trissocyclidae -> Phormospyris -> Phormospyris tricostata
Sister taxa: P. thespios, P. tricornis, P. tricostata, P. sp.


Citation: Phormospyris tricostata Haeckel 1887
Rank: species
Basionym: Phormospyris tricostata

Catalog entries: Phormospyris tricostata

Original description: Cephalis nut-shaped, thorny, with deep sagittal and collar strictures, half as large as the pyramidal thorax. Mouth of the latter dilated and ciliated, twice as broad as the cephalis. Pores irregular, polygonal, with thin bars. Three cylindrical, straight, divergent ribs descend in the wall of the thorax, and are prolonged over the mouth into three short conical teeth.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:



Phormospyris tricostata compiled by the radiolaria@mikrotax project team viewed: 13-6-2021

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