radiolaria - rads_cat - Pentaspyris papillosa radiolaria - rads_cat - Pentaspyris papillosa

CATALOG OF ORIGINAL DESCRIPTIONS: Pentaspyris papillosa Campbell & Clark 1944

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 -> P -> Pentaspyris -> Pentaspyris papillosa
Other pages this level: P. isacantha, P. karyokephalis, P. papillosa, P. paradoxa, P. pentacantha

Pentaspyris papillosa

Citation: Pentaspyris papillosa Campbell & Clark 1944
Taxonomic rank: species
Described on page(s) : p.35
Type specimens: pl.5, fig.14
Type repository: University of California, Museum of Paleontology, San Francisco
Family (traditional): Trissocyclidae
Family (modern): Triospyridae

Current identification:


Original Description

Shell large, divided by a median vertical stricture into two equal hemispheres separated by a sharp V-shaped groove across coryphal face, whole shell 1.55 height in greatest transverse diameter; great-circle a strong, prismatic hoop; pores mostly large, subelliptical, 16 (large) pores in each lobe, and, additionally, one to four odd, tiny, circular pores which are mainly coryphocaudal, large pores arranged in three crudely subvertical and transverse rows, pores in nearly exact duplicate on two hemispheres and not crossing great-circle; framework coarse, thick, and clumsy, with round bars, a few of which (ventrolateral) have spikelets on side facing contained pore; feet five (?), one caudal, remainder tergal and pectoral (all save caudal incomplete in our specimen, and only bases present), caudal (and one of incomplete tergals) thin, needle-shaped, apically sharp, round, and with tiny thorns along both sides of proximal 0.5, feet, at least caudal, as long as shell, divergent, straight; interspaces between feet low arches; basal plate with three (?) petal-like pores.

Size:
Diameter, maximum, 120µm.

Extra details from original publication
Distinguishing characters: Status of Pentaspyris papillosa n. sp. doubtful and cannot be correctly compared with others of this recent genus.

References:

Campbell, A. S. & Clark, B. L. (1944). Miocene radiolarian faunas from southern California. Geological Society of America, Special Papers. 51: 1-76. gs


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Pentaspyris papillosa compiled by the radiolaria@mikrotax project team viewed: 1-5-2025

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