Calocycletta cladara

Taxonomy

Catalog entries: Calocycletta cladara

Original description: Three-segmented pterocorythid with the cephalis distinctly pored, bearing a rather strong, slightly bladed horn. Generally, the lateral lobes of the cephalis are indistinct, and do not cause a distinct break in its contour. Thorax inflated-conical to subspherical, with pores irregular in size and arrangement,
which in late forms tend to be larger near the collar stricture and with their bars joining the cephalis above the level of the collar
pores. The thoracic wall is a thin, porous lamella proximally, becoming much thicker distally where the pore frames are high. Abdomen distinctly more delicate than the thorax, irregularly subcylindrical, often constricted medially; when observed complete, which is rarely, terminated with a thin poreless peristome bearing small teeth. In late forms the row of pores just below the lumbar stricture increase in size to two or three times the size of the surrounding pores.
Remarks on original description: C. cladara occurs in low abundances in all of the Miocene assemblages of the appropriate age from latitudes lower than 40 degrees. It reaches its highest abundances (up to 5% of the total assemblage) in the Late Miocene Indian Ocean assemblages.

Description

Biogeography and Palaeobiology

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:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Calocycletta

Calocycletta cladara compiled by the radiolaria@mikrotax project team viewed: 10-12-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203402 Go to Archive.is to create a permanent copy of this page - citation notes

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