Olladiscoaster cruxii
Set number: 2479
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10µm
Holotype in mobile mount.
Olladiscoaster cruxii Varol & Bowman, 2024
Stellate Olladiscoaster has an asymmetrical, pentagonal outline and diamond-shaped segments with quasi-arms. On the distal side, the distinct sutural ridges are created by the deep cavities. The sutural ridges are gently raised towards the centre and capped by boomerang-shaped distal covers. The distinct proximal ridges without a knob decorate the gently bulged proximal side. At the side view, Olladiscoaster cruxii resembles a boat.
In honour of Dr Jason A. Crux, nannofossil special-ist, San Antonio, Texas, USA.
Maximum diameter: 8.13 µm, Maximum height: 3.60 µm; Diameter of the central area: 4.81 µm, Length of the quasi-arm: 1.66 µm (measurements from bright field micrograph).
Olladiscoaster cruxii has an asymmetrical pentagonal outline and differs from all other Olladiscoaster species.
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
Olladiscoaster cruxii
Varol & Bowman, 2024
Middle Miocene
IODP Expedition 354, Hole U1451B, Bengal Fan, Indian Ocean