Daughter taxa (time control age-window is: 0-800Ma)![]() | Granddaughter taxa | |||
Conoglobigerina Chambers of the last whorl strongly embrace previous whorls; irregularly reticulate wall surface pattern | ||||
![]() | ![]() | ![]() | Globuligerina Wall smooth or pustulose but without reticulate pattern | G. avariformis G. balakhmatovae G. bathoniana G. dagestanica G. glinskikhae G. jurassica G. oxfordiana G. tojeiraensis G. waskowskae G. sp. |
![]() | ![]() | ![]() | Petaloglobigerina |
Taxonomy
Original description: Those genera of the Favusellacea which do not possess a favose surface structure of fused pseudomuricae forming an anastomosing reticulation.
Entries in the Catalog of original descriptions: Conoglobigerinidae
Distinguishing features: Small (<200µm), microperforate wall, 3-4 globose chambers in final wall, aperture umbilical
Geological Range:
Last occurrence (top): within Valanginian Stage (133.88-139.39Ma, top in Valanginian stage). Data source: Total of range of species in this database
First occurrence (base): within Bajocian Stage (168.28-170.30Ma, base in Bajocian stage). Data source: Total of range of species in this database
Plot of range and occurrence data:
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Spiroconvex | aperture: | Umbilical |
sp chamber shape: | Globular | coiling axis: | Low-moderate | periphery: | N/A | aperture border: | - |
umb chbr shape: | Globular | umbilicus: | - | periph margin shape: | Broadly rounded | accessory apertures: | None |
spiral sutures: | Moderately depressed | umb depth: | - | wall texture: | Finely pustulose | shell porosity: | Microperforate: <1µm |
umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 0.0-0.0 | N.B. These characters are used for advanced search. N/A - not applicable |
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 V OReferences:
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Conoglobigerinidae compiled by the pforams@mikrotax project team viewed: 25-1-2021
Short stable page link: http://mikrotax.org/pforams/index.php?id=110066 Go to Archive.is to create a permanent copy of this page - citation notes |