pforams@mikrotax - Globoconusa daubjergensis

pforams@mikrotax - Globoconusa daubjergensis pforams@mikrotax - Globoconusa daubjergensis

Globoconusa daubjergensis

Classification: pf_cenozoic -> Guembelitrioidea -> Guembelitriidae -> Globoconusa -> Globoconusa daubjergensis
Sister taxa: G. victori, G. daubjergensis, G. sp.

Olsson_etal_99_pl64_f10-12.jpg
Olsson_etal_99_pl64_f01-3.jpg
Olsson_etal_99_pl64_f04_f07.jpg
Olsson_etal_99_pl64_f05-6.jpg
Postuma 1971 p149-4.JPG
Postuma 1971 p149-7.JPG

Taxonomy

Citation: Globoconusa daubjergensis (Bronnimann 1953)

Rank: Species

Basionym: Globigerina daubjergensis

Synonyms:

Globigerina daubjergensis Bronnimann, 1953:340, text-fig. 1 [Danian, Daubjerg Quarry, Denmark].
Globoconusa conusa Khalilov, 1956:249, pl. 5: fig. 2a-c [Danian, northeastern Azerbaidzhan].—Blow, 1979:1386, pl. 257: fig. 10 [Danian, DSDP Hole 20C/6/4: 72-74 cm; Brazil Basin, South Atlantic Ocean], fig. 11 [Thanet Sands, Reculver, Kent, England].
Globigerinoides daubjergensis (Bronnimann).—Loeblich and Tappan, 1957a:184, pl. 40: fig. la-c [upper Danian, Sweden], pl. 40: fig. 8a-c [Zone Pl, Pine Barren Mbr., Clayton Fm., Alabama], pl. 41: fig. 9a-c [Zone Pic, McBryde Mbr., Clayton Fm., Alabama], pl. 42: figs. 6a-7c [Zone Pic, Brightseat Fm., Maryland], pl. 43: fig. la-c [Zone Pl, Kincaid Fm., Texas], pl. 44: figs. 7, 8a-c [Zone P2, Wills Point Fm., Texas].—Olsson, 1960:43, pl. 8: figs. 4-6 [Zone Pl, basal Hornerstown Fm., New Jersey].
Globigerina kozlowskii Brotzen and Pozaryska, 1961:162, pl. 1: figs. 1-14, pl. 2: figs. 1-17, pl. 3: figs. la-2c [Danian, Pamietowo, Poland].
Globigerina (Eoglobigerina) trifolia Morozova, 1961:12, pl. 1: fig. 1 [Danian, Tarkhankut, Crimea],
Globoconusa tripartita Morozova et al., 1967:193, pl. 5: figs. 4-6 [Danian, Kopet-Dagh, Crimea],
Globoconusa daubjergensis gigantea Bang, 1969:65, pl. 4: figs. I—3b [type Danian, Denmark],
Globoconusa daubjergensis (Bronnimann).—Olsson, 1970:601, pl. 92: fig. 2a,b [lower Danian, Pine Barren Mbr., Clayton Fm., Millers Ferry, Alabama], figs. 5a-6b [Danian, basal Hornerstown Fm., New Jersey].— Keller, 1993:1, pl. 3: figs. 1-3 [Danian, ODP Hole 690C/15/1: 19-21 cm], pl. 4: figs. 11-13 [Danian, Hole 690C/15/1: 121-123 cm; Weddell Sea, Southern Ocean].
Globastica daubjergensis (Bronnimann).—Blow, 1979:1235, pl. 74: figs. 7-9 [Zone Pl, DSDP Hole 47.2/11/2: 148-150 cm; Shatsky Rise, northwestern Pacific Ocean], pl. 256: figs. 1-9 [Zone D2, Danian, Karlstrup, Denmark], pl. 257: figs. 3, 4 [upper Danian, Ostratorp, Sweden]. [Olsson et al. 1999]

Taxonomic discussion: The morphology of G. daubjergensis has been described in detail by several authors (Bronnimann, 1953; Loeblich and Tappan, 1957a; Troelsen, 1957; Blow, 1979). Troelsen (1957:120) recognized two forms as end-member morphologic variants of Globigerina daubjergensis Bronnimann, noting that the two variants "grade imperceptibly into each other." One of these contains four chambers in each whorl, whereas the other is a three-chambered form (Eoglobigerina trifolia Morozova, 1961, Globigerina tripartita Morozova et al., 1967, and Globastica sp. Type 1 of Blow, 1979). Blow (1979:1244) suggested that the three-chambered form "is one of three later differentiates from the basic Globastica daubjergeHSW-morphotype." Close examination of lowermost Paleocene sequences, however, suggests that the first appearance of the three-chambered morphotype preceded that of the four-chambered morphotype (D'Hondt and Keller, 1991).
Some specimens assigned to the three-chambered morphotype appear morphologically intermediate between Guembelitria cretacea and Globoconusa daubjergensis (Plate 63: Figures 7-9). The existence of such intermediate forms in lowermost Paleocene sediments has often been interpreted to demonstrate the evolution of G. daubjergensis from G. cretacea (Olsson, 1970, 1982; Premoli Silva, 1977; Smit, 1977, 1982; Li and Radford, 1991; Liu and Olsson, 1992).
Blow (1979:1235) suggested that G. daubjergensis, G. daubjergensis gigantea, and G. kozlowskii should probably be considered as only subspecifically related. Bang (1969) proposed the subspecies designation Globoconusa daubjergensis gigantea for morphotypes of G. daubjergensis that are marked by an umbilical bulla and secondary bullae in intercameral sutures. The holotype illustration of Globigerina kozlowskii Brotzen and Pozaryska (1961) has a higher initial spire and tighter coiling mode than the holotype of G. daubjergensis. Nonetheless, the former falls within the range of morphologic variability of the latter. Hence, G. kozlowskii is a junior synonym of G. daubjergensis.
Recrystallization renders the holotype of Postrugoglobigerina praedaubjergensis Salaj difficult to unambiguously identify (Salaj, 1986, pl. 3: fig. 7); however, Salaj (1986) considered Postrugoglobigerina praedaubjergensis immediately ancestral to G. daubjergensis, and the only other illustrated specimen assigned to P. praedaubjergensis is a Globoconusa daubjergensis specimen (Salaj, 1986, pl. 3: figs. 8, 9). [Olsson et al. 1999]

Catalog entries: Globigerina daubjergensis, Globigerina (Eoglobigerina) trifolia, Globoconusa conusa, Globigerina kozlowskii, Globoconusa tripartita, Globoconusa daubjergensis gigantea

Type images:

holotype: G. daubjergensis

Distinguishing features:
Parent taxon (Globoconusa): Test tiny, low to high trochospire of 2-2½ whorls; each whorl with 3-4 inflated, subglobular chambers. Aperture umbilical, a very small, low arch. Sometimes small supplementary apertures on spiral side.
This taxon: Test tiny, low to high trochospire of 2-2½ whorls; each whorl with 3-4 inflated, subglobular chambers. Aperture umbilical, a very small, low arch. Sometimes small supplementary apertures on spiral side.

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

Character matrix
test outline: Lobate chamber arrangement: Trochospiral edge view: Spiroconvex aperture: Umbilical
sp chamber shape: Globular coiling axis: High periphery: N/A aperture border: N/A
umb chbr shape: Globular umbilicus: Narrow periph margin shape: Broadly rounded accessory apertures: None
spiral sutures: Strongly depressed umb depth: Shallow wall texture: Pore mounds shell porosity: Microperforate: <1µm
umbilical or test sutures: Strongly depressed final-whorl chambers: 3-4 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

Globoconusa daubjergensis was abundant in high-latitude and near-shore planktonic foraminiferal assemblages (Troelsen, 1957; Keller, 1989; Premoli Silva and Boersma, 1989; Liu and Olsson, 1992). It was rare in low-latitude open-marine environments ( Premoli Silva and Boersma, 1989; D'Hondt and Keller, 1991; Liu and Olsson, 1992) (Figure 32). [Olsson et al. 1999]

Isotope paleobiology

Although its abundance in near-shore sequences indicates a near-surface planktic habitat (Troelsen, 1957; Keller, 1989; Liu and Olsson, 1992), its oxygen isotopic signature and open-marine abundance patterns suggest a preference for relatively cool water masses ( Premoli Silva and Boersma, 1989; D'Hondt and Keller, 1991; Liu and Olsson, 1992; D'Hondt and Zachos, 1993). [Olsson et al. 1999]

Phylogenetic relations

Globoconusa daubjergensis is considered to be a direct descendent of Guembelitria cretacea (Bang, 1969; Olsson, 1970, 1982; Premoli Silva, 1977; Smit, 1977, 1982; Li and Radford, 1991; Liu and Olsson, 1992). [Olsson et al. 1999]

Most likely ancestor: benthic ancestor - at confidence level 3 (out of 5). Data source: Olsson et al. 1999 fig6, Koutsoukos 2014, fig16.
Likely descendants: Globoconusa victori; plot with descendants

Biostratigraphic distribution

Geological Range:
Notes: Basal Zone Pa to Zone Pic. [Olsson et al. 1999]
Last occurrence (top): within P1c subzone (62.6-63.9Ma, top in Danian stage). Data source: Olsson et al. 1999
First occurrence (base): within Pa zone (65.72-66Ma, base in Danian stage). Data source: Olsson et al. 1999

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
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Globoconusa daubjergensis, synonyms included - Globigerina daubjergensis; Globoconusa conusa; Globoconusa daubjergensis; Globoconusa daubjergensis (<150 microns); Globoconusa daubjergensis (>150 microns);
See also space-time plot :: Samples map :: Parent: Globoconusa

Primary source for this page: Olsson et al. 1999 - Atlas of Paleocene Planktonic Foraminifera, p. 81

References:

Bang, I. (1969). Planktonic foraminifera and biostratigraphy of the type Danian. In, Brönnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E.J. Brill, Leiden 58-65. gs

Blow, W. H. (1979). The Cainozoic Globigerinida: A study of the morphology, taxonomy, evolutionary relationships and stratigraphical distribution of some Globigerinida (mainly Globigerinacea). E. J. Brill, Leiden. 2: 1-1413. gs

Brönnimann, P. (1953). Note on planktonic foraminifera from Danian localities of Jutland, Denmark. Eclogae Geologicae Helvetiae. 45: 339-341. gs

Brotzen, F. & Pozaryska, K. (1961). Foraminiferes du Paleocene et de l'Eocene inferieur en Pologne septentrionale; remarques paleogeographiques. Revue de Micropaléontologie. 4: 155-166. gs

Keller, G. (1993). The Cretaceous-Tertiary Boundary Transition in the Antarctic Ocean and Its Global Implications. Marine Micropaleontology. 21: 1-45. gs

Khalilov, D. M. (1956). 0 pelagicheskoy faune foraminifer Paleogenovykh otlozheniy Azerbaydzhana [Pelagic Foraminifera of the Paleogene Deposits of the Azerbaizhan SSR]. Trudy Instituta Geologii, Akademiya Nauk Azerbaidzhanskoi SSR. 17: 234-255. gs

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. gs

Loeblich, A. R. & Tappan, H. (1957b). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 173-198. gs

Morozova, V. G. (1961). Datsko-Montskie planktonnye foraminifery yuga SSSR [Danian-Montian Planktonic Foraminifera of the Southern USSR]. Paleontologicheskiy Zhurnal. 8-19. gs O

Morozova, V. G., Kozhevnikova, G. E. & Kuryleva, A. M. (1967). Datsko-Paleotsenovye Raznofatsial'nye Otlozheniya Kopet-Daga I. Metody Ikh korrelyatsii po foraminiferam [Danian-Paleocene heterofacial deposits of Kopet-Dag and methods of their correlation according to the foraminifers]. Trudy Geologicheskiy Institut Akademiya Nauk SSSR. 157: 1-208. gs O

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

Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs

Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs

Globoconusa daubjergensis compiled by the pforams@mikrotax project team viewed: 1-10-2023

Taxon Search:

Advanced Search

Short stables page link: https://mikrotax.org/pforams/index.php?id=100128 Go to Archive.is to create a permanent copy of this page - citation notes

Add Comment

Comments

No comments yet. Be the first!

test outline:	Lobate	chamber arrangement:	Trochospiral	edge view:	Spiroconvex	aperture:	Umbilical
sp chamber shape:	Globular	coiling axis:	High	periphery:	N/A	aperture border:	N/A
umb chbr shape:	Globular	umbilicus:	Narrow	periph margin shape:	Broadly rounded	accessory apertures:	None
spiral sutures:	Strongly depressed	umb depth:	Shallow	wall texture:	Pore mounds	shell porosity:	Microperforate: <1µm
umbilical or test sutures:	Strongly depressed	final-whorl chambers:	3-4	N.B. These characters are used for advanced search. N/A - not applicable