radiolaria - rads_cenozoic - Acrosphaera pseudarktios radiolaria - rads_cenozoic - Acrosphaera pseudarktios

Acrosphaera pseudarktios


Classification: rads_cenozoic -> Collosphaeridae -> Acrosphaera -> Acrosphaera pseudarktios
Sister taxa: A. arktios, A. australis, A. collina, A. cyrtodon, A. flammabunda, A. labrata, A. lappacea, A. mercurius, A. murrayana, A. pseudarktios, A. setosa, A. spinosa, A. transformata, A. trepanata, A. sp.

Taxonomy

Citation: Acrosphaera pseudarktios Caulet 1986
Taxonomic rank: species
Basionym: Acrosphaera pseudarktios
Synonyms:
1986 Acrosphaera pseudarktios - Caulet pl. 1, fig.8

From Suzuki Paleotax db:

1986 Acrosphaera pseudarktios n. sp. Caulet p. 226, pl. 1, fig. 8
Taxonomic discussion: Caulet 1986

Catalog entries: Acrosphaera pseudarktios

Original description: Shell surface smooth, spherical, with randomly arranged irregular pores of varying sizes (4--5 on a half-circumference). Two or more poreless spines up to one-third the length of the shell-diameter project outward from all pore margins. Spines forked and joined by very thin siliceous threads building an extra-cortical shell.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:

References:

Caulet, J. (1986a). A refined radiolarian biostratigraphy for the Pleistocene of the temperate Indian Ocean. Marine Micropaleontology. 11(1-3): 217-229. gs

Missing or ambiguous references: Caulet 1986;


logo

Acrosphaera pseudarktios compiled by the radiolaria@mikrotax project team viewed: 15-5-2025

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203000 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image

Comments (2)

Avatar

The species is reported from Late Pleistocene in IODP expiration 369 hole 1516B.

the uploaded Photo is in 40X with 10X objective.

Avatar

Maqsood. Thank you for the comment - I don't seem to be able to find any uploaded image though. If you wish to you can send it direct to me using the email jeremy.young@ucl.ac.uk.

thanks

Jeremy