radiolaria - rads_cat - Lophocyrtis norvegiensis radiolaria - rads_cat - Lophocyrtis norvegiensis

CATALOG OF ORIGINAL DESCRIPTIONS: Lophocyrtis norvegiensis Bjørklund & Kellogg 1972

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 -> Lophocyrtis -> Lophocyrtis norvegiensis
Other pages this level: L. cavifundus, L. dumitricai, L. exitelus, L. galenum, L. golli, L. hadra, L. haywardi, L. holothuria, L. inaequalis, L. jacchia hapsis, L. keraspera, L. klydus, L. nomas, L. norvegiensis, L. oberhaensliae, L. pallantae, L. pseudojacchia, L. regipileus, L. synapta, L. zeira

Lophocyrtis norvegiensis

Citation: Lophocyrtis norvegiensis Bjørklund & Kellogg 1972
Taxonomic rank: species

Current identification:


Original Description

Shell divided into three segments. Cephalis small, hemispherical, thick-walled, bearing two stout three-bladed horns, an apical horn, and a vertical horn in a lateral-oblique position. Cephalic pores small, circular, deep-set. Collar stricture indistinct. Thorax campanulate, thick-walled, rough-surfaced, with circular to elliptical pores somewhat larger than cephalic pores and deeply set in hexagonal frames. In some indivuduals, the thorax bears a thin dorsal spine. Lumbar stricture a distinct ring perforated by pores similar to those in thorax. Abdomen smooth, thin-walled, tapering toward the open mouth, often found broken. Proximally, abdomen studded with small, irregularly placed, shallow-set pores; distally, hyaline in appearance.

Size:
Holotype: Length of cephalis, thorax and lumbar ring 143 microns. Width of thorax at widest point 129 microns. Width at lumbar stricture 114 microns. Width of abdomen at mouth 71 microns. Abdomen and horns slightly broken. Dimensions of other specimens:Length of cephalis, thorax and lumbar ring 100-170 microns. Width of thorax at widest point 92-160 microns. Width at lumbar stricture 50-130 microns. Width of abdomen at mouth 40-80 microns. Diameter of thoracic pores 6-9 microns. Diameter ofabdominal pores 3-5 microns. Length of apical horn 35-100 microns. Length of vertical horn 20-40 microns.

References:

Bjørklund, K. R. & Kellogg, D. E. (1972). Five new Eocene radiolarian species from the Norwegian Sea. Micropaleontology. 18(3): 386-396. gs


logo

Lophocyrtis norvegiensis compiled by the radiolaria@mikrotax project team viewed: 6-10-2026

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/radiolaria/index.php?id=260979 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image

Comments

No comments yet. Be the first!