bforams@mikrotax - Sigmoilopsis schlumbergeri

NB This site is under active development, current content in the main database is primarily from Bolli et al 1994, Hayward et al. 2012, Holbourn et al. 2013, Holbourn and Kaminski 1997, Alegret & Thomas 2001, and Katz et al. 2003. It is intended to expand and develop this to provide rather comprehensive coverage of Mesozoic and Cenozoic deep-sea benthic foraminifera.

Taxonomy

Citation: Sigmoilopsis schlumbergeri (Silvestri), 1904

Basionym: Sigmoilina schlumbergeri Silvestri, 1904

Synonyms:

Planispira celata (Costa). –Brady, 1884, p. 197, pl. 8, figs. 1–4. [according to Holbourn et al. 2013]
Sigmoilina schlumbergeri Silvestri. –Schlumberger, 1887, p. 481, pl. 7, figs. 12–14, textfigs. 6–7. [according to Holbourn et al. 2013]
Sigmoilopsis schlumbergeri (Silvestri). –Barker, 1960, pl. 8, figs. 1–4. –van Morkhoven et. al. 1986, p. 57, pl. 18, figs. 1a–d. –Loeblich and Tappan, 1987, p. 350, pl. 356, figs. 8–13. –Loeblich and Tappan, 1994, p. 59, pl. 103, figs. 9–12. –Jones, 1994, p. 23, pl. 8, figs. 1–4. –Robertson, 1998, p. 35, pl. 11, fig. 5. –Milker and Schmiedl, 2012, p. 69, figs. 18.7–8. [according to Holbourn et al. 2013]

Taxonomic discussion: Sigmoilopsis schlumbergeri (Silvestri) closely resembles Sigmoilopsis celata (Costa). However, it has an acutely angled periphery and clearly delineated sutures, whereas Sigmoilopsis celata has a more rounded periphery and less conspicuous sutures. [Holbourn et al. 2013]

Description

Test forms an ovate, initially quinqueloculine series, then rapidly changes the plane of coiling, initially appearing sigmoid in section, then gradually becoming biserial in adult specimens. The moderately inflated chambers are half a coil in length, with a floor and a narrow lumen. Chamber walls are thick, and agglutinated with calcareous cement including sand, calcareous shell fragments, and sponge spicules. Aperture is a terminal, round opening with a small tooth. [Holbourn et al. 2013]

Biogeography and Palaeobiology

Worldwide. Reported from the Indian Ocean, Antarctic, Coral Sea, Tasman Sea, Chatham Rise, New Zealand, Indonesia, Taiwan, Okinawa, Japan, Atlantic, North Sea, Mediterranean, Caribbean, and Gulf of Mexico (see Observed Occurrences in van Morkhoven et al., 1986).

Neritic to abyssal. Reported between 28 and 1630 fathoms at “Challenger” stations (Jones 1994). [Holbourn et al. 2013]

Biostratigraphic distribution

Geological Range:
Notes: Early Miocene to Recent.
Last occurrence (top): Extant. Data source: Holbourn et al. 2013
First occurrence (base): within Early Miocene Sub-Epoch (15.97-23.03Ma, base in Aquitanian stage). Data source: Holbourn et al. 2013

Plot of occurrence data:
NB The ranges given for genera and higher taxa are the total ranges of species included in that taxon in this database - so the true total range of the taxon will usually be longer

References:

Barker, R. W. (1960). Taxonomic notes on the species figured by H.B. Brady in his report on the foraminifera dredged by H.M.S. Challenger during the years 1873–1876. SEPM Special Publication. 9: 1-238. gs

Brady, H. B. (1884). Report on the foraminifera dredged by H.M.S. Challenger during the years 1873–1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 9: 1-814. gs

Holbourn, A., Henderson, A. S. & MacLeod, N. (2013). Atlas of Benthic Foraminifera. Natural History Museum, London. 1-651. gs

Jones, R. W. (1994). The Challenger Foraminifera. Oxford University Press, Oxford. 1-149. gs

Katz, M. E. & Miller, K. G. (1987). Neogene benthic foraminiferal biofacies of the New Jersey Transect. Initial Reports of the Deep Sea Drilling Project. 95: 299-311. gs

Katz, M. E. & Miller, K. G. (1993a). Latest Oligocene to Earliest Pliocene benthic foraminiferal biofacies of the northeastern Gulf of Mexico. Micropaleontology. 39(4): 367-403. gs

Loeblich, A. R. Jr & Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold, New York. 1-970. 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

Milker, Y. & Schmiedl, G. (2012). A taxonomic guide to modern benthic shelf foraminifera of the western Mediterranean Sea. Palaeontologia Electronica. 15(2;16A ): 1-134. gs

Robertson, B. E. (1998). Systematics and paleoecology of the benthic foraminiferida from the Buff Bay section, Miocene of Jamaica. Micropaleontology. 44 supplement 2: 1-266. gs

Schlumberger, C. (1887). Note sur le genre Planispira. Bulletin de la Société Zoologique de France. 12: 105-118. gs

Silvestri, A. (1904b). Richerche strutturali su alcune forme dei Trube di Bonfornello (Palermo). Memorie dell’Accademia Pontificia Romana dei Nuovi Lincei. 22: 235-276. gs

van Morkhoven, F. P. C. M., et al. (1986). Cenozoic cosmopolitan deep-water benthic foraminifera. Bulletin des Centres de Recherches Exploration-Production Elf-Aquitaine. Memoire 11: 1-421. gs

Sigmoilopsis schlumbergeri

Taxonomy

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

References:

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