Citation: Scyphosphaera interstincta Bown & Newsam 2017Rank: Species
Distinguishing features: Parent taxon (Scyphosphaera): Coccospheres with Pontosphaera-like body coccoliths and equatorial coccoliths with rims elevated into vase-like structures (lopadoliths). This taxon: Elongate barrel-shaped, with distinct wall ornament of large pits or pores.
Morphology: Elongate-barrel shaped Scyphosphaera with distinct wall ornament of large pits or pores. The coccolith wall tapers gently both proximally and distally, and the inner cycle thickens at the distal opening. Differentiation: Distinguised from other Scyphosphaera by the wall ornament and inner cycle thickening at the distal opening. [Bown & Newsam 2017] Size: Holotype L/W = 7.7μm; H = 14.3μm (Paratype L/W = 8.3μm; H = 14.3μm). Holotype L/W = 6.1μm; H = 11.3μm [Bown & Newsam 2017]
Geological Range: Last occurrence (top): within NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: Bown & Newsam 2017 First occurrence (base): within NP15b subzone (44.12-45.49Ma, base in Lutetian stage). Data source: Bown & Newsam 2017
Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Scyphosphaera
Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gsO
Scyphosphaera interstincta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-10-2022