Discoaster bengalica
Set number: 3857
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Holotype
Set number: 3856
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Set number: 3855
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Discoaster bengalica Varol & Bowman, 2024
A symmetrical pentagonal species has segments with tapering arms with bifurcated terminations. The distinct proximal ridges without any knob decorate the proximal side, and sutural ridges created by the deep cavities are present on the distal side.
After the holotype area, the Bay of Bengal.
Maximum diameter: 9.84 µm, Diameter of the central area: 3.94 µm, Length of arms: 2.95 µm, Diameter of the proximal knob: 3.37 µm (measurements from bright field micrograph)
Discoaster bengalica and Discoaster asymmetroivrachiones have pentagonal outlines. Discoaster bengalica is a symmetrical species with tapering arms with bifurcated termination, whereas Discoaster asymmetroivrachiones have an asymmetrical outline with strongly tapering arms without bifurcations.
Varol, O. & Bowman, A. R. 2024. The New Middle Miocene Genus Olladiscoaster, and Related and Associated Discoasters. Grzybowski Foundation Special Publication, 28: 1-103 pp.
Holotype
Discoaster bengalica
Varol & Bowman, 2024
Late Miocene
IODP Expedition 354, Hole U1451B, Bengal Fan, Indian Ocean