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

CATALOG OF ORIGINAL DESCRIPTIONS: Larcopyle hayesi subsp. irregularis 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 irregularis
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 irregularis

Citation: Larcopyle hayesi subsp. irregularis Lazarus et al. 2005
taxonomic rank: sub-species

Current identification/main database link: Larcopyle hayesi irregularis Lazarus et al. 2005

Original Description

The large (250–300 μm) shell has an ellipsoidal shape. A single (?) spiral with closely spaced whorls surrounds a central spongy mass. Medium-sized pores with frames perforate the outer wall. The beams, particularly in the inner half of the shell are not so well aligned between whorls, so the characteristic white stripes of L. h. ‘hayesi’ are only developed in the outer part of the shell in L. h. ‘irregularis’. A wide pylome with teeth is obvious in most specimens. Transitional specimens to L. h. ‘haysei’ are very common.

Extra details from original publication

Remarks. L. h. ‘hayesi’ has so far been illustrated only from the Antarctic, where it is best developed in the Early to Middle Miocene. L. h. ‘irregularis’, by contrast, seems to be relatively cosmopolitan in Mid-Cenozoic sediments, at least in high latitude regions. Specimens of L. h. ‘hayesi’ may, if the centre part of the shell is not fully cleaned of sediment, appear spongy and thus much like L. h. ‘irregularis’.


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 irregularis compiled by the radiolaria@mikrotax project team viewed: 23-4-2024

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Add Comment

* Required information
Captcha Image
Powered by Commentics


No comments yet. Be the first!