In the mobile mount.
In the mobile mount.
Bowmania swastica Stradner & Steinmetz, 1984
Cuboid species of Bowmania with protruding apices exhibit cobbler’s anvil-like blocks delineated by sutures. The protrusions of blocks create a swastika-shaped appearance for this species. The central cross in Plate 35, Figure 18 (in Varol, 2025a), exhibits length-fast (-) elongation, while the blocks display length-slow (+) elongation.
Stradner, H., Steinmetz, J., 1984. Cretaceous calcareous nannofossils from the Angola Basin, Deep Sea Drilling Project Site 530. Initial Reports of the Deep Sea Drilling Project 75, 565-649.
Varol, O. 2025a. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication. 29: 1-222
Bowmania swastica
Stradner & Steinmetz, 1984
Late Maastrichtian
DSDP Leg 75, Site 530A, Angola Basin, Southeast Atlantic Ocean