radiolaria - rads_cenozoic - Calocycletta parva radiolaria - rads_cenozoic - Calocycletta parva

Calocycletta parva

Classification: rads_cenozoic -> Pterocorythidae -> Calocycletta -> Calocycletta parva
Sister taxa: C. acanthocephala, C. anekathen, C. caepa, C. cladara, C. costata, C. parva, C. robusta, C. serrata, C. virginis, C. sp.


Citation: Calocycletta parva Moore 1972
taxonomic rank: species
Basionym: Calocycletta parva
1972 Calocyletta parva - Moore plate 1, figures 1-5

Catalog entries: Calocycletta parva

Original description: Cephalis ovate, lobed, with sparse subcircular to circular pores, and bearing a weakly bladed apical horn. A small appendix to the cephalis cavity may extend up into the apical horn (plate 1, figure 5) or, if the horn is more strongly bladed, small pores may be found at the base of the horn between the blades. Thorax subspherical, heavy, with a roughened surface and hexagonally arranged, circular pores. Usually no lumbar stricture externally. Abdomen subcylindrical, tapering distally, with a ragged termination, generally thinner and more delicate than the thorax. Abdominal pores subcircular and varying in size. Pores tending to be longitudinally aligned but randomly spaced. This species is generally very rare.


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:


Moore, T. C. Jr. (1972). Mid-Tertiary evolution of the radiolarian genus Calocycletta. Micropaleontology. 18(2): 144-152. gs


Calocycletta parva compiled by the radiolaria@mikrotax project team viewed: 13-7-2024

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