pforams@mikrotax - Pulleniatina

pforams@mikrotax - Pulleniatina pforams@mikrotax - Pulleniatina

Pulleniatina

Classification: pf_cenozoic -> Globorotaliidae -> Pulleniatina
Sister taxa: Fohsella, Globoconella, Globorotalia, Neogloboquadrina, Pulleniatina

Daughter taxa (time control age-window is: 0-800Ma)
			primalis -> obliquiloculata lineage
			Pulleniatina finalis Like P. obliquiloculata but more involute, aperture wider, fewer chambers in final whorl (4 vs 4-5)
			Pulleniatina obliquiloculata Test globose, rounded, aperture extending from umbilical area to periphery and onto spiral side.
			Pulleniatina praecursor Like P. primalis but aperture extends onto the periphery of the previous whorl
			Pulleniatina primalis Aperture restricted to the umbilical side
			praespectabilis -> spectabilis lineage
			Pulleniatina spectabilis Like P. praespectabilis but pseudocarina (pinched shoulder) on final whorl, and dorsal surface flatter
			Pulleniatina praespectabilis Like P. primalis but more plano-convex with distinct, rounded, peripheral shoulder
			Pulleniatina sp. Specimens which cannot be assigned to established species

Taxonomy

Citation: Pulleniatina Cushman 1927

taxonomic rank: genus

Type species: Pullenia obliquiloculata Parker & Jones 1865

Taxonomic discussion: Pulleniatina includes forms with trochospiral to streptospiral coiling, a subglobular test encrusted with a thick cortex, and an aperture that is interiomarginal, umbilical-extraumbilicalin position. This genus resembles Globigerina in early development but differs in exhibiting later streptospiral coiling and an embracing final chamber with characteristic extraumbilical peripheral aperture and thick cortex. Until 1964, the genus Pulleniatina was considered monotypic, represented only by the type species P. obliquiloculata (Parker and Jones). However, detailed work by Banner and Blow (1967) on the evolution of this genus revealed greater taxonomic diversity and complexity. [Kennett & Srinivasan 1983]
Pearson & Penny (2021) provide a mdern overview of the genus.

Catalog entries: Pulleniatina

Distinguishing features:
Parent taxon (Globorotaliidae): Macroperforate, non-spinose
This taxon: Compact streptospiral test with smooth cortical coating and large slit-like aperture

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

Biogeography and Palaeobiology

Phylogenetic relations

The earliest member of the Pulleniatina lineage, P. primalis, evolved from N. acostaensis at the base of Zone N17B at about 6.2 Ma and provides a useful datum (Srinivasan and Kennett, 1981a). P. primalis seems to have evolved within two separate lineages: (1) P. primalis to P. praecursor to P. obliquiloculata and (2) a relatively short-lived, geographically restricted lineage from P. primalis to P. spectabilis (Text Fig. 22). [Kennett & Srinivasan 1983]

Most likely ancestor: Neogloboquadrina - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within M13b subzone (6.14-8.58Ma, base in Tortonian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Globorotaliidae

Primary source for this page: Kennett & Srinivasan 1983, p.199

References:

Banner, F. T. & Blow, W. H. (1967). The origin, evolution and taxonomy of the foraminiferal genus Pulleniatina Cushman, 1927. Micropaleontology. 13(2): 133-162. gs

Cushman, J. A. (1927a). An outline of a re-classification of the Foraminifera. Contributions from the Cushman Laboratory for Foraminiferal Research. 3: 1-105. gs O

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

Pearson, P. N. & Penny, L. (2021). Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. PLoS One. 16: 360-. gs

Srinivasan, M. S. & Kennett, J. P. (1981a). A review of Neogene planktonic foraminiferal biostratigraphy: applications in the equatorial and south Pacific. SEPM Special Publication. 395-432. gs