1992 Actinomma? magnifenestra - Lazarus pl. 3, figs. 1-9
From Suzuki Paleotax db:
1992 Actinomma (?) magnifenestra n. sp. Lazarus p. 795, pl. 3, figs. 1-9
Catalog entries: Actinomma magnifenestra
Original description: Single large cortical shell, no medullary shells observed. Cortical shell spherical or slightly irregular in shape. Lattice wall bars moderately thick, somewhat angular in cross section, weakly framed. Pores large, subcircular to strongly polygonal, vary in size but are fairly large relative to shell diameter. Several (10-30) short- to medium-length, tapered, three-bladed spines project from the surface of the shell.
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:
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 References:
Actinomma magnifenestra compiled by the radiolaria@mikrotax project team viewed: 11-10-2024
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