Giraffospyris cyrillium


Classification: rads_cenozoic -> Trissocyclidae -> Triospyridae -> Giraffospyris -> Giraffospyris cyrillium
Sister taxa: G. annulispina, G. cyrillium, G. didiceros, G. haeckelii, G. lata, G. laterispina, G. sp.

Taxonomy

Citation: Giraffospyris cyrillium Sanfilippo & Riedel 1973
Rank: species
Basionym: Giraffospyris cyrillium

Catalog entries: Giraffospyris cyrillium

Original description: Shell generally rounded, inverted-conical basally. No sagittal constriction, and slight or no constriction between cephalis and thorax.
QTSagittal ring D-shaped, connected directly with the lattice shell posteriorly and apically. and separated from it anteriorly. Primary and secondary lateral bars well developed. Apical spine usually protrudes from shell surface as a short thorn.QTLattice shell moderately robust, with subcircular pores, and com-monly with few scattered thorns on the surface. Open base of inverted-conical thorax has no differentiated peristome except a less porous area terminated usually by an irregular number of short triangular teeth.

Description

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:

References:


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Giraffospyris cyrillium compiled by the radiolaria@mikrotax project team viewed: 25-11-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=204140 Go to Archive.is to create a permanent copy of this page - citation notes



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