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)
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)

Catalog entries: Hastigerina (Bolliella) adamsi, Beella discors

Type images:

Distinguishing features: 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


Diagnostic characters: Planispiral, final chambers distinctly clavate

Aperture: Equatorial arch [Aze 2011, based on Coxall et al. 2007]

Coiling direction (in extant population): mixed


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:5.0-6.0 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]


Isotope paleobiology: Aze et al. 2011 ecogroup 4 - Open ocean sub-thermocline. Based on very light ∂13C and very heavy ∂18O 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 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

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

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, . 1-358. gs


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Globigerinella adamsi compiled by the pforams@mikrotax project team viewed: 18-10-2019

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Short stable page link: http://mikrotax.org/pforams/index.php?id=104043 Go to Archive.is to create a permanent copy of this page - citation notes



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