pforams@mikrotax - Petaloglobigerina pforams@mikrotax - Petaloglobigerina


Classification: pf_mesozoic -> Conoglobigerinidae -> Petaloglobigerina
Sister taxa: Conoglobigerina, Globuligerina, Petaloglobigerina
Daughter taxa (time control age-window is: 0-800Ma)
Petaloglobigerina simmonsi


Citation: Petaloglobigerina Gradstein, in Gradstein & Waskowska 2021
taxonomic rank: Genus

Original description: Test trochospiral, low spired, final whorl large and often flat with 3.5–4 petaloide and ovate chambers, rarely finger like; chamber periphery may become narrow and pointed, but not imperforate. In larger specimens, individual chambers in the last whorl may slightly twist from the axis of coiling; sutures strongly incised; umbilicus narrow or closed; aperture a narrow slit with rim at base of last chamber in umbilical position. A small and incomplete (half) bulla may be rarely present, covering the aperture. Wall microperforate and densely pustulose, with pustules fusing to form irregular ridges.

Entries in the Catalog of original descriptions: Petaloglobigerina

Geological Range:
Last occurrence (top): at top of Early Kimmeridgian Substage (100% up, 152.2Ma, in Kimmeridgian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Callovian Stage (161.50-165.30Ma, base in Callovian stage). Data source: Total of ranges of species in this database

Plot of range and occurrence data:


Gradstein, F. & Waskowska, A. (2021). New insights into the taxonomy and evolution of Jurassic planktonic foraminifera. Swiss Journal of Palaeontology. 140(1): 1-12. gs O

Morozova, V. G. & Moskalenko, T. A. (1961). Планктонные фораминиферы пограничных отложений байосского и батского ярусов Центрального Дагестана (Северо-Восточный Кавказ) [Foraminiferes planctoniques des depots limitrophes du Bajocien et du Bathonien du Daghestan central (Nord-Est du Caucase)]. Voprosyi Mikropaleontologii. 5: 3-30. gs

Simmons, M. D., Boudagher-Fadel, M. K., Banner, F. T. & Whittaker, J. E. (1997). The Jurassic Favusellacea, the earliest Globigerina. In, Boudagher-Fadel, M. K., Banner, F. T. & Whittaker, J. E. (eds) The Early Evolutionary History of Planktonic Foraminifera. British Micropalaeontological Society Publication Series . 17-30. gs


Petaloglobigerina compiled by the pforams@mikrotax project team viewed: 24-7-2024

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