Nannotax3 - ntax_mesozoic - Broinsonia furtiva

Distinguishing features:
Parent taxon (Broinsonia): Outer rim of V-units, with slight clockwise obliquity, visible on distal surface and form dark rim in LM; central-area spanned by an axial cross, grill or perforate plate. 3 tiers visible in side view.
This taxon: Axial cross with rows of closely spaced pores parallel to cross bars forming elongate perforations

Citation: Broinsonia furtiva Bukry, 1969 emend Hattner, Wind & Wise 1980

Synonyms:

Aspidolithus furtivus (Bukry, 1969) Perch-Nielsen 1984
Aspdidolithus sp.1 & sp.2 of Lauer 1975 (according to Hattner & Wise1980)
Broinsonia lacunosa Forcheimer 1972 (cf. Hattner et al. 1980)

Taxonomic discussion: Hattner & Wise (1980) regarded B. furtiva as the likely ancestor of B. parca which differs in being larger and lacking distinct crossbars.

Geological Range:
Last occurrence (top): within Santonian Stage (83.65-85.70Ma, top in Santonian stage). Data source: Burnett 1998
First occurrence (base): within Turonian Stage (89.39-93.90Ma, base in Turonian stage). Data source: Burnett 1998

References:

Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79. gs O

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O

Hattner, J. G. & Wise, S. W. (1980). Upper Cretaceous calcareous nannofossil biostratigraphy of South Carolina. South Carolina Geology. 24: 41-117. gs

Hattner, J. G., Wind, F. H. & Wise, S. W. (1980). The Santonian-Campanian boundary: comparison of nearshore-offshore calcareous nannofossil assemblages. Cahiers de Micropaléontologie. 3: 9-26. gs O

Lauer, G. (1975). Evolutionary trends in the Arkhangelskiellaceae (calcareous nannoplankton) of the Upper Cretaceous of Central Oman, SE Arabia. In, Noel. D. & Perch-Nielsen, K. (eds) Report of the consultant group on calcareous nannoplankton, Kiel. Archives des Sciences . 28(317): 259-262. gs

Lees, J. A. & Bown, P. R. (2005). Upper Cretaceous calcareous nannofossil biostratigraphy, ODP Leg 198 (Shatsky Rise, Northwest Pacific Ocean). Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-60. gs

Perch-Nielsen, K. (1984). Validation of new combinations. INA Newsletter. 6(1): 42-46. gs

Püttmann, T. & Mutterlose, J. (2019). Calcareous nannofossils from a Late Cretaceous nearshore setting. Journal of Nannoplankton Research. S4: 81-88. gs

Salomon, R. (1999). The Calcite Palace. Website - https://ina.tmsoc.org/galleries/CalcitePalace/index.htm. -. gs

Thierstein, H. R. (1974). Calcareous nannoplankton - Leg 26, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 26: 619-667. gs

Broinsonia furtiva

References:

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