CATALOG OF ORIGINAL DESCRIPTIONS: Lithopera renzae spiculosa 1970

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 -> L -> Lithopera -> Lithopera renzae spiculosa
Other pages this level: L. amblyostauros, L. ananassa, L. bacca, L. baueri, L. biaurita, L. biaurita [nomen nudum], L. bursella, L. circopora, L. crassa, L. elongata, L. globosa, L. gutta, L. lagena, L. magna, L. neotera, L. nicobarica, L. nicobarica [nomen nudum], L. niduspendulum, L. oceanica, L. ovata, L. oxystauros, L. pyrum, L. renzae, L. renzae spiculosa, L. rossica, L. setosa, L. thornburgi

Lithopera renzae spiculosa

Citation: Lithopera renzae spiculosa 1970
Rank: sub-species
Type specimens: pl. 4, figs. 1, 5-8; pl. 5, figs. 3, 5
Described on page(s) : p. 32
Family (traditional): Theoperidae
Family (modern): Eucyrtidiidae

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Current identification:


Original Description
Description: Three segmented form: cephalis small, spherical, partly hidden in thorax, with a small apical horn; thorax forms major part of test, approximately campanulate; abdomen terminally closed, very variable in shape and size. Collar stricture indistinct, lumber stricture distinct in contour. Pores of thorax and abdomen irregular in size and arrangement. Wall of thorax thicker than that of abdomen. Test surface rough because of spinose nodes at each vertex of polygonal pore frames. Dimensions: Total length (excluding apical horn) 140-200 ^m. Maximum breadth 100-155 gm. Ratio of abdomen to thorax length 0.06-0.43 : 1. Measurements are made on 30 specimens from sample IZK18. Remarks: This subspecies is distinguished from Lithopera renzae renzae Sanfilippo and Riedel by having its spinose nodes, more heavily silicified wall and somewhat larger test. The stratigraphic range of this subspecies is restricted within the total range of Eucyrtidium inflatum and overlaps that of Lithopera renzae renzae. Type: Holotype- PI. 4, figs. 8a-b. IGPS 99766. Sample IZK18, Iizuka Diatomite Member, Na-jimi Formation. Stratigraphic occurrence: Iizuka Diatomite Member, Najimi Formation.

Editors' Notes
dbl - added n. subsp. desc. from Funayama 1988; 12.3.19

References:

Funayama, M. (1988). Miocene radiolarian stratigraphy of the Suzu area, northeastern part of the Noto Peninsula, Japan. Contributions from the Institute of Geology and Paleontology, Tohoku University. 91: 15-41. gs

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Lithopera renzae spiculosa compiled by the radiolaria@mikrotax project team viewed: 17-5-2021

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