radiolaria - rads_cenozoic - Acrosphaera labrata radiolaria - rads_cenozoic - Acrosphaera labrata

Acrosphaera labrata


Classification: rads_cenozoic -> Collosphaeridae -> Acrosphaera -> Acrosphaera labrata
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 labrata Lazarus 1992
taxonomic rank: species
Basionym: Acrosphaera labrata
Synonyms:
1979 Collo-sphaerid sp. - Keany Plate 1, fig. 5
1990 Acrosphaera sp. - Lazarus p. 713, pl. 2, fig. 5
1992 Acrosphaera? labrata - Lazarus Plate 1, figs. 1-10
Taxonomic discussion: Lazarus 1992 (ODP 120 SR) pl 1 figs 1-10

Catalog entries: Acrosphaera labrata

Original description: Single spherical or elliptical shell, lackingspines of any sort, with fairly small, irregularly shaped, irregularly distributed pores. Many pores are surrounded by low, smooth, thick rims. Some specimens have more angular pores, and low straight ridges on the surface.

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:

Keany, J. (1979). Early Pliocene radiolarian taxonomy and biostratigraphy in the Antarctic region. Micropaleontology. 25(1): 50-74. gs

Lazarus, D. (1990). Middle Miocene to Recent radiolarians from the Weddell Sea, Antarctica, ODP Leg, 113. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 709-727. gs

Lazarus, D. (1992). Antarctic Neogene radiolarians from the Kerguelen Plateau, Legs 119 and 120. In, Wise, S. W. Jr. , Schlich, R. et al. (ed.) . Proceedings of the Ocean Drilling Program, Scientific Results . 120: 785-809. gs


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Acrosphaera labrata compiled by the radiolaria@mikrotax project team viewed: 28-2-2024

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