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.

Taxonomy

Citation: Calocycletta parva Moore 1972
taxonomic rank: species
Basionym: Calocycletta parva
Synonyms:
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.

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:

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


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Calocycletta parva compiled by the radiolaria@mikrotax project team viewed: 2-3-2024

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203404 Go to Archive.is to create a permanent copy of this page - citation notes



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