pforams@mikrotax - Globigerinella adamsi pforams@mikrotax - Globigerinella adamsi

Globigerinella adamsi


Classification: pf_cenozoic -> Globigerinidae -> Globigerinella -> Globigerinella adamsi
Sister taxa: G. adamsi, G. calida, G. radians, G. siphonifera ⟩⟨ G. clavaticamerata, G. molinae, G. navazuelensis, G. obesa, G. praesiphonifera, G. pseudobesa, G. roeglina ⟩⟨ G. megaperta, G. wagneri, G. sp.

Taxonomy

Citation: Globigerinella adamsi (Banner & Blow, 1959)
taxonomic rank: species
Basionym: Hastigerina (Bolliella) adamsi Banner & Blow, 1959
Synonyms:
Taxonomic discussion: This is a rare Quaternary species and is not discussed in Kennett & Srinivasan (1983), although they do recognise it as valid species (p.15)

Classified as Bolliella adamsi by Schiebel and Hemleben (2017), but the rarely used, strictly monotypic and phylogenetically unnecessary genus Bolliella is here rejected. [Brummer & Kucera 2022]

Catalog entries: Hastigerina (Bolliella) adamsi, Beella discors

Type images:

Distinguishing features:
Parent taxon (Globigerinella): Test initially trochospiral, becoming nearly planispiral; globular to ovate chambers; aperture umbilical; fine spines cover the test
This taxon: Near planispiral coiling & digitate chambers

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description


Wall type:
Spinose; Hispid [Aze 2011]

Size:
>250µm

Character matrix
test outline:Stellatechamber arrangement:Pseudoplanispiraledge view:Equally biconvexaperture:Equatorial
sp chamber shape:Elongatecoiling axis:Very lowperiphery:N/Aaperture border:N/A
umb chbr shape:Elongateumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Strongly depressedumb depth:Deepwall texture:Cancellateshell porosity:Macroperforate: >2.5µm
umbilical or test sutures:Strongly depressedfinal-whorl chambers:5-6 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


Geographic distribution

In modern oceans a rare, warm water, species [SCOR WG138]

Map of distribution from ForCenS database

Isotope paleobiology
Aze et al. 2011 ecogroup 4 - Open ocean sub-thermocline. Based on very light δ13C and very heavy δ18O Cited sources (Aze et al. 2011 appendix S3): Coxall et al. (2007)

Most likely ancestor: Globigerinella calida - at confidence level 3 (out of 5). Data source: Aze et al. 2011.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (SCOR WG138)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Plankrange

Plot of occurrence data:

References:

Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs

Banner, F. T. & Blow, W. H. (1959). The classification and stratigraphical distribution of the Globigerinaceae. Palaeontology. 2(1): 1-27. gs

Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs

Chaproniere, G. C. H. (1991). Pleistocene to Holocene planktic foraminiferal biostratigraphy of the Coral Sea, offshore Queensland, Australia. BMR Journal of Australian Geology and Geophysics. 12: 195-221. gs

Coxall, H. K., Wilson, P. A., Pearson, P. N. & Sexton, P. F. (2007). Iterative evolution of digitate planktonic foraminifera. Paleobiology. 33: 495-516. gs

Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs

Loeblich, A. & Tappan, H. (1994). Foraminifera of the Sahul shelf and Timor Sea. Cushman Foundation for Foraminiferal Research, Special Publication. 31: 1-661. gs O

Saito, T., Thompson, P. R. & Breger, D. (1976). Skeletal ultra-microstructure of some elongate-chambered planktonic foraminifera and related species. In, Takayanagi, Y. & Saito, T. (eds) Progress in Micropaleontology, Special Publication. Micropaleontology Press, The American Museum of Natural History, New York 278-304. gs

Schiebel, R. & Hemleben, C. (2017). Planktic Foraminifers in the Modern Ocean. Springer-Verlag, Heidelberg. 1-358. gs

Siccha, M. & Kucera, M. (2017). ForCenS, a curated database of planktonic foraminifera census counts in marine surface sediment samples. Scientific Data. 4(1): 1-12. gs


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Globigerinella adamsi compiled by the pforams@mikrotax project team viewed: 15-4-2024

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