pforams@mikrotax - Globorotalia menardii

Citation: Globorotalia menardii (Parker, Jones & Brady, 1865 after d'Orbigny, 1826 nomen nudum)

Synonyms:

Globorotalia (Menardella) menardii (Parker, Jones & Brady) [e.g. Kennett & Srinivasan 1983]
Rotalina cultrata d'Orbigny 1839 = Globorotalia cultrata [according to Stainforth et al. 1975; Kennett & Srinivasan 1983]
Globorotalia fimbriata = Pulvinulina menardii var fimbriata Brady 1884 [according to Brummer & Kucera 2022; considered a separate species that evolved from G. menardii in the late Quaternary by e.g. Aze et al. 2011]
Globorotalia akersi Snyder 1975 [according to Brummer & Kucera 2022]
Globorotalia menardii jamesbayensis McCulloch 1977 [according to Brummer & Kucera 2022 - but listed by them as amebayensis]
Globorotalia menardii antarctica McCulloch 1977 [according to Brummer & Kucera 2022]
Pulvinulina gilberti Bagg 1908 [according to Brummer & Kucera 2022]

Variants:

Gr. (M) menardii neoflexuosa Srinivasan, Kennett, and Bé - form with an acute angle of the final chamber [according to Kennett & Srinivasan 1983]
Gr. (M) menardii gibberula Bé - extreme flexuose form [according to Kennett & Srinivasan 1983, Brummer & Kucera 2022]

Taxonomic discussion: Brummer & Kucera (2022) present a long, detailed and well-argued case that the correct name for this taxon is G. cultrata. Pending consideration by the Neogene Planktonic Foram Working Group, we are still using the name G. menardii here, but we will probably implement the change of nomenclature in due course [editor's comment - JRY 2022]

Distinguishing features:
Parent taxon (menardii lineage): G. archeomenardii - menardii, limbata - miocenica & exilis - pertenius lineages
This taxon: Like G. praemenardii but larger, with raised spiral sutures, and a more massive keel.

Description

Test large, low trochospiral, compressed, equatorial periphery lobulate, axial periphery acute with a prominent keel; 5 to 6 wedge-shaped chambers in the final whorl, increasing regularly in size as added; sutures on spiral side strongly curved, raised; on umbilical side radial to slightly curved, depressed: surface smooth, densely perforate with circular pores (Pl. 28, Fig. 2); umbilicus wide, shallow, aperture interiomarginal, umbilical-extraumbilical, a low arch bordered by a thick lip. [Kennett & Srinivasan 1983]

Biogeography and Palaeobiology

Tropical to warm subtropical. [Kennett & Srinivasan 1983] Low latitudes [Aze et al. 2011, based on Kennett & Srinivasan (1983)]

In modern oceans an abundant, warm water, species [SCOR WG138]

Map of distribution from ForCenS database

Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on light δ¹³C and relatively heavy δ¹⁸O. Sources cited by Aze et al. 2011 (appendix S3): Shackleton & Vincent (1978); Pearson & Shackleton (1995); D. R. M. Stewart unpublished data

The controversy over the nomenclatural priority of Gr. menardii versus Gr. cultrata was discussed at length by Banner and Blow (1960a), Parker (1962), and Stainforth et al. (1975). We support the proposal of Stainforth et al. (1975) that the name menardii be retained for the Miocene and younger menardi-form species, so widely recognized.
Gr. (M.) menardii evolved from Gr. (M.) praemenardii by an increase in test size and by the gradual development of raised spiral sutures and a more massive keel.
Gr. (M.) menardii in the Recent areas of upwelling in the Indian Ocean and eastern tropical Pacific develops an acute angle of the final chamber, giving rise to Gr. (M) menardii neoflexuosa Srinivasan, Kennett, and Bé, and an extreme flexuose form
Gr. (M) menardii gibberula Bé. [Kennett & Srinivasan 1983]

Molecular Genotypes recognised (data from PFR² database, June 2017), one genotype only from 31 sequences. References: André et al. 2014; Darling et al. 1997; Ujiié & Lipps 2009; Seears et al. 2012;

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (SCOR WG138)
First occurrence (base): within N12 zone (11.79-13.41Ma, base in Serravallian stage). Data source: Kennett & Srinivasan 1983

References:

Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs

Banner, F. T. & Blow, W. H. (1960a). Some primary types of species belonging to the superfamily Globigerinaceae. Contributions from the Cushman Foundation for Foraminiferal Research. 11: 1-41. gs O

Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E J Brill, Leiden 380-381. 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 (Zoology): 1-814. gs

Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs

Cita, M. B. (1973). Pliocene biostratigraphy and chronostratigraphy. Initial Reports of the Deep Sea Drilling Project. 13: 1343-1379. gs

d'Orbigny, A. (1826). Tableau methodique de la Classe de Cephalopodes. Annales des Sciences Naturelles, Paris. 7: 245-314. gs

Darling, K. F., Wade, C. M., Kroon, D. & Brown, A. J. L. (1997). Planktic foraminiferal molecular evolution and their polyphyletic origins from benthic taxa. Marine Micropaleontology. 30: 251-266. gs

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

Lam, A. & Leckie, R. M. (2020a). Late Neogene and Quaternary diversity and taxonomy of subtropical to temperate planktic foraminifera across the Kuroshio Current Extension, northwest Pacific Ocean. Micropaleontology. 66(3): 177-268. 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 O

Norris, R. D. (1998). Planktonic foraminifer biostratigraphy: Eastern Equatorial Atlantic. Proceedings of the Ocean Drilling Program, Scientific Results. 159: 445-479. gs O

Parker, F. L. (1962). Planktonic foraminiferal species in Pacific sediments. Micropaleontology. 8(2): 219-254. gs

Parker, W. K., Jones, T. R. & Brady, H. B. (1865). On the nomenclature of the foraminifera. X cont: The Species enumerated by d'Orbigny in the 'Annales des Sciences Naturelles', vol. 7, 1826 (The Species illustrated by Models. Annals and Magazine of Natural History. 3(16): 15-41. gs O

Pearson, P. N. & Shackleton, N. J. (1995). Neogene multispecies planktonic foraminifer stable isotope record, Site 871, Limalok Guyot. Proceedings of the Ocean Drilling Program, Scientific Results. 144: 401-410. gs

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

Seears, H. A., Darling, K. F. & Wade, C. M. (2012). Ecological partitioning and diversity in tropical planktonic foraminifera. BMC Evolutionary Biology. 12(54): 1-15. gs

Shackleton, N. J. & Vincent, E. (1978). Oxygen and carbon isotope studies in Recent Foraminifera from the southeast Indian Ocean. Marine Micropaleontology. 3: 1-13. gs

Siccha, M. & Kucera, M. (2017). ForCenS, a curated database of planktonic foraminifera census counts in marine surface sediment samples. Scientific Data. 4(1): 1-12. gs

Spero, H. J. (1998). Life history and stable isotope geochemistry of planktonic foraminifera. In, Norris, R. D. & Corfield, R. M. (eds) Isotope paleobiology and paleoecology. The Palaeontological Society Papers . 4: 7-36. gs

Stainforth, R. M., Lamb, J. L., Luterbacher, H., Beard, J. H. & Jeffords, R. M. (1975). Cenozoic planktonic foraminiferal zonation and characteristics of index forms. University of Kansas Paleontological Contributions, Articles. 62: 1-425. gs O

Ujiié, Y. & Lipps, J. H. (2009). Cryptic diversity in planktonic foraminifera in the northwest Pacific ocean. Journal of Foraminiferal Research. 39: 145-154. gs

test outline:	Lobate	chamber arrangement:	Trochospiral	edge view:	Equally biconvex	aperture:	Umbilical-extraumbilical
sp chamber shape:	Crescentic	coiling axis:	Low	periphery:	Single keel	aperture border:	Thick lip
umb chbr shape:	Subtriangular	umbilicus:	Narrow	periph margin shape:	Subangular	accessory apertures:	None
spiral sutures:	Raised	umb depth:	Shallow	wall texture:	Smooth	shell porosity:	Macroperforate: >2.5µm
umbilical or test sutures:	Weakly depressed	final-whorl chambers:	5-6	N.B. These characters are used for advanced search. N/A - not applicable

Globorotalia menardii

Taxonomy

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

References:

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