Calocycletta virginis


Classification: rads_cenozoic -> Pterocorythidae -> Calocycletta -> Calocycletta virginis
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 virginis Haeckel 1887
Rank: species
Basionym: Calocycletta virginis
Taxonomic discussion: (Haeckel) 1887; Riedel 1959

Catalog entries: Calocyclas virginis

Original description: Shell smooth, with distinct collar, but indistinct lumbar stricture. Length of the three joints = 1: 2: 1, breadth = 1: 4: 3. Cephalis ovate, with a slender, conical horn, little shorter than the shell. Thorax subspherical. Abdomen nearly cylindrical, little contracted towards the peristome. Pores regular, circular, twice as broad in the thorax as in the abdomen, where they are separated by slight longitudinal ribs. Corona of the peristome composed of sixteen to twenty-four vertical, lamellar feet, which are longer than the abdomen, rectangular, and truncate at the end.

Length of the three joints, a 40, b 80, c 50µm ; breadth, a 30, b 110, c 90µm.
Remarks on original description: Haeckel listed Calocyclas virginis under the subgeneric name Calocycletta, but did not include the subgeneric name in the species]

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:

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs

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


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Calocycletta virginis compiled by the radiolaria@mikrotax project team viewed: 22-10-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=203408 Go to Archive.is to create a permanent copy of this page - citation notes



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