Dendrospyris binapertonis

Taxonomy

Catalog entries: Dendrospyris binapertonis

Original description: Diagnosis: A species of Dendrospyris characterized by six basal pores, sternal pore, and a lattice shell that is joined directly to the front, apex, and back of the sagittal ring and does not extend below the basal ring.

Description: Sagittal ring subcircular; 54 to 70μ high; 28 to 48μ thick; joined directly to front, apex, and back of lattice shell. Apical and vertical spines short; no frontal or axial spines. Some specimens have no sternal bar; in other skeletons, all eight basal-connector bars joined to basal ring. Basal ring oval, having lateral and sagittal indentations ; 33 to 64μ wide; 27 to 37μ thick; encloses six basal pores. Three or four basal spines circular in cross section; 12 to 55μ long; project from basal ring; taper to simple point or have irregularly branched ends. Basal spine adjacent to each of frontal and primary-lateral bars; some specimens have basal spine adjacent to sternal bar. In some forms, short auxiliary spines project laterally from proximal ends of basal spines adjacent to primary-lateral bars. Lattice shell 75 to 100μ wide; not extending below basal ring; slightly constricted sagittally; has appearance of smooth, thin sheet perforated by subcircular, widely spaced lattice pores 4 to 28μ in diameter. Variable number of lattice bars joined to sagittal or basal rings. Sternal pore present; frontal and vertical pores absent.

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
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Dendrospyris binapertonis, synonyms included - Dendrospyris binapertonis;
• See also space-time plot :: Samples map :: Parent: Dendrospyris

Dendrospyris binapertonis compiled by the radiolaria@mikrotax project team viewed: 6-10-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203820 Go to Archive.is to create a permanent copy of this page - citation notes

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