CATALOG OF ORIGINAL DESCRIPTIONS: Tholospyris baconiana spinula Goll 1973

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: rads_cat -> T -> Tholospyris -> Tholospyris baconiana spinula
Other pages this level: T. baconiana spinula, T. baconiana variabilis, T. caudata, T. cupola, T. devexa, T. devexa dusenburyi, T. devexa finalis, T. fenestrata, T. fornicata, T. galeata, T. gephyristes, T. infericosta, T. procera, T. ramosa, T. spinosus, T. tautessares, T. tripodiscus

Tholospyris baconiana spinula

Citation: Tholospyris baconiana spinula Goll 1973
Rank: sub-species
Type specimens: pl.5, figs.4-8; pl.6, figs.1-7; pl.7, figs.1-4
Type repository: Holotype: USNM 181847, Paratype: USNM 181848, U.S. National Museum, Washington, D.C.
Described on page(s) : p.452
Family (traditional): Trissocyclidae
Family (modern): Acanthodesmiidae

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Current identification:


Original Description
A subspecies of Tholospyris baconiana characterized by symmetrical pairs of short lattice spines on the distal ends of some or all of the lattice bars joined to the sagittal ring.
Sagittal ring subpolygonal, 63 to 68 microns high, 49 to 56 microns thick, joined directly to front and back of lattice shell. No apical or axial spines; vertical spine very short. arises near base of sagittal ring long, slender. apical connector bar; short, broad. frontal connector bar. Single, small. sculptured tubercle projects from base of sagittal ring at intersect with primary lateral bars, which are joined to basal ring; no other basal connector bars.
Basal ring subpolygonal, tribladed on back exterior surface, indented laterally and sagittally, 97 to 106 microns wide, 58 to 65 microns thick, joined directly to front and back of sagittal ring. enclosing four basal pores. Lattice bars joined to basal ring irregular in number and position. Lattice shell 157 to 193 microns high, 98 to 122 microns wide, completely enclosed. surrounding apex and base of sagittal ring; slight horizontal constriction at base of sagittal ring. Four thick lattice bars joined to front-middle, front-apex, back-apex and back-middle of saggittal ring ; tribladed on exterior surface; bear short, symmetrical pairs of lattice spines, enclose four pairs of sagittal lattice pores. Distal portions of lattice shell uniformly composed of thin, smooth, lattice bars separating small, densely spaced, subcircular, lattice pores. Sagittal lattice pores
are covered by thin, perforated, lattice plates. No lattice shell tubercles. No frontal, sternal or vertical pores.

Etymology: From the Latin spinula = small spine.

References:

Goll, M. R. (1972b). Systematic of eight Tholospyris taxa (Trissocycylidae, Radiolaria). Micropaleontology. 8(4): 443-475. gs


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Tholospyris baconiana spinula compiled by the radiolaria@mikrotax project team viewed: 12-5-2021

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