Chiloguembelinidae


Classification: pf_cenozoic -> microperforate -> Chiloguembelinidae
Sister taxa: Cassigerinellidae, Chiloguembelinidae, Guembelitriidae, Heterohelicidae, Problematica,
Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa


Distinguished from Chiloguembelina by the presence of an internal plate connecting successive foramina (Poore and Gosnell, 1987, pl. 1, figs. 11, 14), a prominent extension of an apertural collar, and a smooth to granular rather than pustulose to costate surface texture.

Taxonomy

Citation: Chiloguembelinidae Reiss, 1963
Rank: Family
Taxonomic discussion: As noted in the discussion of the Guembelitriidae, the Chiloguembelinidae appears to be a monophyletic or paraphyletic family descended from Guembelitria cretacea via Woodringina claytonensis (Olsson, 1970, 1982; Premoli Silva, 1977; Smit, 1982; D'Hondt, 1991; Li and Radford, 1991; Liu and Olsson, 1992; Olsson et al., 1992). It is generally believed that this family was monophyletic throughout the Paleocene. It's post-Paleocene status is less clear, as the relationships of Chiloguembelina to such late Paleogene and Neogene taxa as Streptochilus Bronnimann and Resig, 1971, and Cassigerinella Pokorny, 1955, is presently uncertain.
Reiss (1963) originally assigned both Chiloguembelina and Zeauvigerina to the Chiloguembelinidae. Given the Late Cretaceous occurrence of Zeauvigerina (Huber and Boersma, 1994) and the earliest Paleocene derivation of Chiloguembelina from a guembelitriid ancestor, retention of this assignment would render the Chiloguembelinidae a polyphyletic group. On these grounds, Zeauvigerina should no longer be assigned to the Chiloguembelinidae. [Olsson et al. 1999]

Catalog entries: Chiloguembelinidae;

Type images:

Short diagnosis: Small test comprised of biserially arranged chambers, often with a slightly twisted coiling axis. Intercameral sutures distinct, depressed, and often somewhat oblique. Wall calcareous and microperforate with smooth to pustulous surface texture. Aperture arched, rimmed by narrow lip, and generally infolded on one side of ultimate chamber. Many Chiloguembelina species with well-developed flap or flange bordering aperture along infolded side.

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.

Description


Diagnostic characters: Small test comprised of biserially arranged chambers, often with a slightly twisted coiling axis. Intercameral sutures distinct, depressed, and often somewhat oblique. Wall calcareous and microperforate with smooth to pustulous surface texture. Aperture arched, rimmed by narrow lip, and generally infolded on one side of ultimate chamber. Many Chiloguembelina species with well-developed flap or flange bordering aperture along infolded side. [D'Hondt & Huber in Olsson et al. 1999]

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Chattian Stage (23.03-28.09Ma, top in Chattian stage). Data source: Total of range of species in this database
First occurrence (base): within Danian Stage (61.61-66.04Ma, base in Danian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Primary source for this page: Huber et al. 2006 - Atlas of Eocene Planktonic Foraminifera, chapter 16, p. 472

References:

Brönnimann, P. & Resig, J., (1971). A Neogene globigerinacean biochronologic time-scale of the southwestern Pacific. Deep Sea Drilling Project, 7(2): 1235-1469.

D'Hondt, S.L., (1991). Phylogenetic and stratigraphic analysis of earliest Paleocene biserial and triserial planktonic foraminifera. Journal of Foraminiferal Research, 21: 168-181.

Huber, B.T. & Boersma, A., (1994). Cretaceous origination of Zeauvigerina and its relationship to Paleocene biserial planktonic foraminifera. Journal of Foraminiferal Research, 24: 268-287.

Huber, B.T.; Olsson, R.K. & Pearson, P.N., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene microperforate planktonic foraminifera (Jenkinsina, Cassigerinelloita, Chiloguembelina, Streptochilus, Zeauvigerina, Tenuitella, and Cassigerinella) and Problematica (Dipsidripella). In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera, Cushman Foundation Special Publication 41. Cushman Foundation Special Publication. Allen Press, Lawrence, Kansas, pp. 461-508.

Li, Q. & Radford, S.S., (1991). Evolution and biogeography of Paleogene microperforate planktonic foraminifera. Palaeogeography, Palaeoclimatology, Palaeoecology, 83: 87-115.

Liu, C. & Olsson, R.K., (1992). Evolutionary radiation of microperforate planktonic foraminifera following the K/T mass extinction event. Journal of Foraminiferal Research, 22: 328-346.

Olsson, R.K., (1970). Paleocene planktonic foraminiferal biostratigraphy and paleozoogeography of New Jersey. Journal of Paleontology, 44(4): 589-604.

Olsson, R.K.; Hemleben, C.; Berggren, W.A. & Liu, C., (1992). Wall Texture Classification of planktonic foraminifera genera in the Lower Danian. Journal of Foraminiferal Research, 22(3): 195-213.

Pokorny, V., (1955). Cassigerinella boudecensis, n. gen., n. s.p. (Foraminifera, Protozoa) from the Oligocene of the Zdanice Flych). Vestnik UUG, 30: 136-140.

Premoli Silva, I., (1977). Upper Cretaceous-Paleocene magnetic stratigraphy at Gubbio, Italy; II. Biostratigraphy. Geol. Soc. Am. Bull., 88: 371-374.

Reiss, Z., (1963). Reclassification of perforate foraminifera. Bulletin of the Geological Survey of Israel, 35: 1-111.

Ruess 1963 [sorry, not in our bibliography yet]

Smit, J., (1982). Extinction and Evolution of planktonic foraminifera after a major impact at the Cretaceous/Tertiary boundary. In: Silver, L.T. and Schultz, P.H. (Editors), Geological Implications of Impacts of Large Asteroids and Comets on the Earth, Geological Society of America Special Paper 190, pp. 329-352.


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Chiloguembelinidae compiled by the pforams@mikrotax project team viewed: 23-10-2017

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