radiolaria - rads_cat - Larcopyle hayesi hayesi radiolaria - rads_cat - Larcopyle hayesi hayesi

CATALOG OF ORIGINAL DESCRIPTIONS: Larcopyle hayesi subsp. hayesi Lazarus et al. 2005

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 -> Larcopyle -> Larcopyle hayesi hayesi
Other pages this level: L. augusti, L. bucerum, L. buetschli chenmuhongi, L. buetschlii, L. buetschlii orion, L. drieschii, L. eccentricanoides, L. eccentricum, L. faustae, L. hayesi hayesi, L. hayesi irregularis, L. herbstii, L. labyrinthusa, L. molle, L. nebulum, L. peregrinator, L. polyacantha amplissima, L. polyacantha titan, L. pulchella, L. spongiosa, L. weddellium

Larcopyle hayesi hayesi

Citation: Larcopyle hayesi subsp. hayesi Lazarus et al. 2005
taxonomic rank: sub-species
Described on page(s) : 119-120
Type specimens: Museum für Naturkunde, Mikropaläontologie No. ECO-23
Type sample (& lithostrat): 751A-9H-5, 98-102 cm
Type age (chronostrat): Late Miocene
Type locality: ODP Site 751
Type repository: Museum für Naturkunde, Berlin

Current identification/main database link: Larcopyle hayesi (Chen) hayesi Lazarus et al. 2005

Original Description

The large shell (250–300 μm) is spherical to elliptical and sometimes has small thorns. The large pores are surrounded by pentagonal and hexagonal frames. Some pores appear to be subdivided into smaller pores by internal bar networks. The single spiral has up to 10, occasionally even more, closely spaced whorls. The levels of the whorls are connected by aligned beams, forming a characteristic radial pattern of dark bands (the beams) and white stripes (pore regions) when viewed in trans- mitted light. The meshwork of bars and beams can, in some of the intermediate spirals, create hub and spoke types of lattice- work, with a radial beam as the hub and triangular pores (apices directed inward) surrounding it. In the centre of the shell often a spongy mass can be seen which obscures the innermost whorls, although this is less well developed than in L. h. ‘irregularis’. A pylome is weak or absent, although many specimens have a few external spines, and often one rather stout spine with a flat tip extending from the pylome region.

Extra details from original publication

Remarks. L. h. ‘hayesi’ is close to L. h. ‘irregularis’, but can be distinguished by its more strongly developed pore alignment (white-striped appearance) and more spherical shape, somewhat larger size, larger pores on the cortical shell and less spongy centre.


Lazarus, D., Faust, K. & Popova-Goll, I. (2005). New species of prunoid radiolarians from the Antarctic Neogene. Journal of Micropalaeontology. 24(2): 97-121. gs


Larcopyle hayesi hayesi compiled by the radiolaria@mikrotax project team viewed: 3-3-2024

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