radiolaria - rads_cenozoic - Clathrocyclas alcmenae

Clathrocyclas alcmenae

Classification: rads_cenozoic -> Theoperidae -> Anthocyrtidae -> Clathrocyclas -> Clathrocyclas alcmenae
Sister taxa: C. alcmenae, C. aurelia, C. australis, C. cassiopeiae, C. semeles, C. universa, C. sp.


Citation: Clathrocyclas alcmenae Haeckel 1887
Rank: species
Basionym: Clathrocyclas alcmenae
Taxonomic discussion: Haeckel 1887

Catalog entries: Clathrocyclas alcmenae

Original description: Shell conical, with two indistinct strictures. Length of the three joints = 2: 10: 1, breadth = 2: 12: 14. Cephalis hemispherical, with two divergent, pyramidal horns; frontal horn as long as the cephalis, occipital horn of twice the length. Thorax conical, with large hexagonal meshes, increasing gradually in size towards the short abdomen, which is represented only by a single circular girdle of small, square, ahdominal pores. Coronal of the peristome with twenty to thirty triangular, divergent, nearly horizontal feet, as long as the cephalis.
Remarks on original description: Haeckel listed Clathrocyclas alcmenae under the subgeneric name Clathrocycloma, but did not include the subgeneric name in the species name.
See also Clathrocyclas europae, C. semeles, C. danaes and Eucecryphalus cuvieri in Haeckel, 1887a.[comment from RadWorld database]




Biogeography and Palaeobiology

Similar species

Geographic distribution


Phylogenetic relations

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:


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 years 1873-1876. 18: 1-1803. gs


Clathrocyclas alcmenae compiled by the radiolaria@mikrotax project team viewed: 29-11-2022

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