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Bosedinia tarfayensis
Bosedinia tarfayensis, Prauss, 2012, p.290, figs.2H–I,3K–L.
Holotype: Prauss, 2012, fig.2I.
Paratype: Slide 27, E/F ref. L 37, Fig. 2I.
Type locality and stratigraphic horizon. Well-2, Tarfaya Basin, Morocco; upper Turonian.
Age: late Turonian.
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Original description: [Prauss, 2012]:
Diagnosis:
A species of Bosedinia with an alveolate autophragm and fine, hair-like spines that are evenly distributed over part of it.
Description:
As in B. alveolata, the alveolae of B. tarfayensis are of different sizes and bipolar in distribution, i.e., larger alveolae are located at the antapical cyst portion and become gradually smaller towards the apical portion ( Fig. 2H, I). In contrast, the spines seem to be somewhat restricted to the epitract cyst portion. They are very thin and may be overlooked under low magnification in a light microscope.
Dimensions (in µm):
Holotype: length 66.01, width 70.49.
Paratype: length 68.64, width 66.41.
Diameter of alveolae (10 measurements) 1.03 (1.65) 2.62; spines (4 measurements) 3.93 (5.39) 6.9.
Affinities/Comparison:
Bosedinia tarfayensis differs from all other species of Bosedinia in possessing both an alveolate wall and fine hair-like spines over parts of the cyst surface. In contrast to B. alveolata and B. spinosa, it is relatively rare in the present material.
Holotype: Prauss, 2012, fig.2I.
Paratype: Slide 27, E/F ref. L 37, Fig. 2I.
Type locality and stratigraphic horizon. Well-2, Tarfaya Basin, Morocco; upper Turonian.
Age: late Turonian.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Prauss, 2012]:
Diagnosis:
A species of Bosedinia with an alveolate autophragm and fine, hair-like spines that are evenly distributed over part of it.
Description:
As in B. alveolata, the alveolae of B. tarfayensis are of different sizes and bipolar in distribution, i.e., larger alveolae are located at the antapical cyst portion and become gradually smaller towards the apical portion ( Fig. 2H, I). In contrast, the spines seem to be somewhat restricted to the epitract cyst portion. They are very thin and may be overlooked under low magnification in a light microscope.
Dimensions (in µm):
Holotype: length 66.01, width 70.49.
Paratype: length 68.64, width 66.41.
Diameter of alveolae (10 measurements) 1.03 (1.65) 2.62; spines (4 measurements) 3.93 (5.39) 6.9.
Affinities/Comparison:
Bosedinia tarfayensis differs from all other species of Bosedinia in possessing both an alveolate wall and fine hair-like spines over parts of the cyst surface. In contrast to B. alveolata and B. spinosa, it is relatively rare in the present material.