Daughter taxa (time control age-window is: 0-800Ma)
Granddaughter taxa
Globanomalina Very low trochospiral; 5-6 chambers in final whorl; chamber-shape variable. Aperture interiomarginal, umbilical-extraumbilical, arch with narrow lip. Wall smooth, normally perforate, pustules in some species.
Muricohedbergella Low to very low trochospiral. Chambers globular, 5-8 in final whorl. Umbilicus small & deep.
Aperture low to high arch, with narrow lip.
Normal perforate wall, smooth to heavily pustulose, nonspinose.
Planoglobanomalina Planispiral, compressed, loosely coiled, numerous chambers in final whorl, last 1-3 chambers uncoiling. Aperture equatorial, oval-shaped with broad lip.
Hebergellidae (the Cenozoic taxa included here have often been placed in the Hedbergellidae - see discussion)
Taxonomic discussion:
Loeblich and Tappan (1984; see also Loeblich and Tappan 1988) erected the Family Globanomalinidae to unite Globanomalina with forms ancestral to the Hantkeninidae (e.g. Clavigerinella) that were then considered to be directly related to each other. Subsequent research (Coxall and others, 2003) has disproved this link.
In the Atlas of Eocene Planktonic Foraminifera, the Family Globanomalinidae was not recognized and the genera that are included in this work were assigned to the Hedbergellidae (Olsson and Hemleben, 2006; Pearson and others, 2006a). Recent work on Cretaceous Hedbergella (especially wall microstructure studies) has revealed complexities in the phylogeny that casts significant doubt on a direct link between true Hedbergella from the Aptian (type species Anomalina lorneianatrochoidea Gandolfi, 1942) and later forms that have traditionally been included in Hedbergella, including the Maastrichtian ancestors of Paleocene Globanomalina (Huber and Leckie, 2011:61). Fundamental revisions to the Mesozoic suprageneric classification are likely to be implemented by the Mesozoic Planktonic Foraminifera Working Group (Huber and Leckie, 2011:61) which may include a restriction of Family Hedbergellidae (B.T. Huber, personal communication, 2011). For this reason the Family Globanomalinidae is resurrected and emended herein to include Globanomalina and all its descendant forms (Pseudohastigerina, Planoglobanomalina, and Turborotalia).[Pearson et al. 2018]
Distinguishing features: Parent taxon (pf_cenozoic): This is a polyphyletic grouping including all Cenozoic planktonic foraminifera This taxon: Hedbergellids - trochospiral, mostly low trochospiral. Apertures of earlier formed chambers remain visible around the umbilicus.
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
Biostratigraphic distribution
Geological Range: Last occurrence (top): at top of O2 zone (100% up, 30.3Ma, in Rupelian stage). Data source: Total of ranges of the species in this database First occurrence (base): within R. calcarata zone (75.06-75.91Ma, base in Campanian 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. For the customisable plot option go to a genus page Parent: pf_cenozoic
Primary source for this page: Olsson & Hemleben 2006 - Eocene Atlas, chap. 14, p. 415
References:
Loeblich, A. R. & Tappan, H. (1961). Cretaceous planktonic foraminifera: Part I-Cenomanian. Micropaleontology. 7: 257-304. gs
Olsson, R. K. & Hemleben, C. (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Globanomalina, Planoglobanomalina n. gen and Pseudohastigerina. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 14): 413-432. gsO
Pearson, P. N., Olsson, R. K., Spezzaferri, S. & Leckie, R. M. (2018a). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globanomalinidae (Turborotalia and Pseudohastigerina). In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 14): 403-414. gs
Globanomalinidae compiled by the pforams@mikrotax project teamviewed: 7-10-2024
