Earth and Planetary Science

Taxonomical Consideration, Phylogeny and Paleobiogeography of Some Argentinian Ypresian Benthic Foraminiferal Species

Haidar Salim Anan

Al Azhar University-Gaza, P.O Box 1277, Gaza, Palestine

DOI: https://doi.org/10.36956/eps.v2i1.815

Received: 19 February 2023; Revised: 7 April 2023; Accepted: 18 April 2023; Published Online: 28 April 2023

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Abstract

Rich and well preserved Argentinian taxa made it possible to correlate them with those previously identified species in the coeval sequence in different Tethyan North America, Europe and Middle East localities. This study deals with new information on paleontology and lineages of fourteen Argentinian Ypresian benthic foraminiferal species from the Punta Torcida Formation, lower-middle Eocene (Ypresian-lower Lutetian), Tierra del Fuego Island and Fuegian continental shelf, which belongs to twelve genera: Laevidentalina, Lagenoglandulina, Tollmannia, Tristix, Leticuzonaria, Palmula, Leroyia, Marginulina, Ramulina, Orthokarstenia, Rectuvigerina and Pleurostomella. Ten of the illustrated species are believed to be new: Laevidentalina jannoui, Lagenoglandulina argentinica, Tollmannia argentinica, Leticuzonaria argentinica, Palmula americana, Leroyia argentinica, Marginulina argentinica, Ramulina subornata, Ramulina morsii and Rectuvigerina argentinica sp. nov. The paleoenvironment of the Argentinian taxa would have been a shelf sea of normal salinity, where muds were deposited under low energy and low oxygen conditions, as is suggested by the dominance of infaunal morphotypes and excellent preservation of the tests, whereas intercalated sandstones reflect moderate energy and oxic conditions, bearing microfossil assemblages displaced from shallower settings.

Keywords: Paleontology; Eocene; Lineage; Paleogeography; Paleoenvironment; Argentina; Tethys

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References

[1] Jannou, G.E., 2009. Microfósiles Marinos del Eoceno inferior, Isla Grande de Tierra Del Fuego, Argentina: bioestratigrafía, paleoambiente y paleobiogeografía (Spanish) [Marine microfossils of the lower Eocene, Isla Grande de Tierra Del Fuego, Argentina: biostratigraphy, paleoenvironment and paleobiogeography] [PhD thesis]. Biblioteca Digital, Universidad de Buenos Aires (UBA), Facultad de Ciencias Exactas Naturales (FCEN). p. 1-228.

[2] Jannou, G.E., Náñez, C.A., Malumián, N., 2022. Foraminíferos bentónicos de la Formación Punta Torcida, Eoceno inferior-medio (YpresianoLutetiano inferior), Isla Grande de Tierra del Fuego y plataforma continental fueguina (Spanish) [Benthic foraminifera from the Punta Torcida Formation, Lower-Middle Eocene (Lower Ypresian-Lutetian), Isla Grande de Tierra del Fuego and Tierra del Fuego continental shelf]. Serie Contribuciones Técnicas. Geología Regional. 9, 53.

[3] Loeblich, A.R., Tappan, H., 1988. Foraminiferal genera and their classification. Springer: Berlin.

[4] Anan, H.S., 2015. Paleocene Lagenid benthic foraminifera of Jabal Mundassa, Al Ain Area, United Arab Emirates. Egyptian Journal of Paleontology. 15, 61-83.

[5] Anan, H.S., 2009. Paleontology and stratigraphical distribution of suborder Lagenina (benthic foraminifera) from the Middle-Late Eocene Mazyad Member of the Dammam Formation in Jabal Hafit, Al Ain area, United Arab Emirates, northern Oman Mountains. Revue de Paléobiologie. 28(1), 1-18.

[6] Stache, G., 1864. Die Foraminiferen der tertiären Mergel des Whaingaroa-Hafens (Prov. Auckland), Novara-Expedition, 1857-1859 (German) [The foraminifera of the tertiary marls of Whaingaroa Harbor (Prov. Auckland), Novara Expedition, 1857-1859]. Geologische Theil. 1(2), 159-304.

[7] Anan, H.S., 2002. Stratigraphy and paleobiogeography of some Frondiculariinae and Palmulinae benthic foraminiferal genera in the Paleocene of Egypt (Misr). Neues Jahrbuch fur Geologie und Palaeontologia Monatshefte. 10, 629-640.

[8] Anan, H.S., 2021. Lenticuzonaria: A new Tethyan Lagenid benthic foraminiferal genus. Earth Sciences Pakistan (ESP). 5(1), 33-36.

[9] Lea, I., 1833. Contributions to geology. Carey, Lea and Blanchard: Philadelphia. pp. 227.

[10] Anan, H.S., 2020. Leroyia: a new Tethyan Lagenid benthic foraminiferal genus. Earth Sciences Pakistan (ESP). 4(2), 53-57.

[11] Batsch, A.I.G.C., 1791. Sechs Kupfertafeln mit Conchylien des Seesandes, gezeichnet und gestochen von A. J. G. K. Batsch, Jena (German) [Six copper plates with sea sand conchylia, drawn and engraved by A. J. G. K. Batsch, Jena]. Iena: Academische Buchhandlung. Available from: https://www.digitale-sammlungen.de/en/details/bsb10231112

[12] Cushman, J.A., 1938. Additional new species of American Cretaceous foraminifera. Contribution from the Cushman Laboratory Foraminiferal Research Sharon. 14, 31-50.

[13] Anan, H.S., 2022. On the variability of benthic foraminiferal species of the genus Ramulina in the Tethys. Journal of Foraminiferal Research. 52(3), 1-7.

[14] Nakkady, S.E., 1955. The stratigraphic implication of the accelerated tempo of evolution in the Mesozoic-Cenozoic transition of Egypt. Journal of Paleontology. 29(4), 702-706.

[15] Plummer, H.J., 1927. Foraminifera of the Midway Formation in Texas. Bulletin University of Texas. 2644, 3-206.

[16] Cushman, J.A., Jarvis, P.W., 1929. New foraminifera from Trinidad. Contributions from the Cushman Laboratory for Foraminiferal Research. 5, 6-17.

[17] Hantken, M., 1875. Die Fauna der Clavulina szaboi Schichten, I. Theil: Foraminiferen. Mitt. Jb. k. Ungaren (German) [The fauna of the Clavulina szaboi strata, Part I: Foraminifera. Mitt. Jb. k. Hungarian]. Geological Anstalt. 4, 1-93.

[18] Silvestri, A., 1923. Microfauna pliocenica rizopodi reticolari di Capocolle presso Forli (Italian) [Pliocene microfauna reticular Rhizopods of Capocolle near Forli]. Atti della Pontificia Accademia della Scienze Nuovi Lincei, Roma (1922-1923). 76, 70-77.

[19] Anan, H.S. (editor), 2007. Paleontological and biostratigraphical remarks on some diagnostic Tethyan benthic foraminifera. 2nd International Conference on the Geology of the Tethys; Cairo University, Cairo. p. 303-308.

[20] Nuttall, W.L.F., 1930. Eocene foraminifera from Mexico. Journal of Paleontology. 4, 271-293.

[21] Todd, R., Kniker, H.T., 1952. An Eocene foraminiferal fauna from the Agua Fresca Shale of Magallanes Province, southernmost Chile. Cushman Foundation for Foraminiferal Research: Ithaca. pp. 1-28.

[22] Anan, H.S., 1994. Benthic foraminifera around Middle/Upper Eocene boundary in Egypt. Middle East Research Center, Ain Shams University, Earth Science Series. 8, 210-233.

[23] Brady, H.B., 1879. Notes on some of the Reticularian Rhizopoda of the “Challenger” Expedition: Part 2. Additions to the knowledge of porcelaneous and hyaline types. Quaternary Journal of Microscopical Science, New Series. 19, 261-299.

[24] Anan, H.S., Sharabi, S.A., 1988. Benthonic foraminifera from Upper Cretaceous-Lower Tertiary rocks of northwest Kharga Oasis, Egypt. Middle East Research Center, Ain Shams University, Earth Science Series. 2, 191-218.

[25] Nakkady, S.E., 1950. A new foraminiferal fauna from the Esna Shale and Upper Cretaceous chalk of Egypt. Journal of Paleontology. 24(6), 675-692.

[26] Anan, H.S., 2019. On the variability of benthic foraminiferal species of the genus Pleurostomella in the Tethys. Journal of Microbiology & Experimentations. 7(3), 173-181.

[27] Mohan, K., Gupta, A.K., Bhaumik, A.K., 2011. Distribution of deep-sea benthic foraminifera in the Neogene of Blake Ridge, NW Atlantic Ocean. Journal of Micropalaeontology. 30(1), 33-74.

[28] Alegret, L., Thomas, E., 2013. Benthic foraminifera across the Cretaceous/Paleogene boundary in the Southern Ocean (ODP Site 690): Diversity, food and carbonate saturation. Marine Micropaleontology. 105, 40-51.

[29] Sztrákos, K., 2000. Eocene foraminifers in the Adour Basin (Aquitaine, France): biostratigraphy and taxonomy. Revue de Micropaléontologie. 43(1-2), 71-172.

[30] Proto Decima, F., de Biase, R., 1975. Foraminiferi bentonici del Paleocene, dell’ Eocene inferiore e medio. Foraminiferi bentonici del Paleocene ed Eocene della sezione di Possagno (Italian) [Benthic foraminifera from the Paleocene, lower and middle Eocene. Paleocene and Eocene benthic foraminifera of the Possagno section]. Schweizerische Paläontologische Abhandlungen. 97, 87-98.

[31] Hulsbos, R.E., 1986. Eocene benthic foraminifers from the upper continental rise off New Jersey, Deep Sea Drilling Project Site 605. Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office). 93, 525-538.

[32] Ozsvárt, P., 2007. Middle and Late Eocene benthic foraminiferal fauna from the Hungarian Paleogene Basin: Systematics and paleoecology. Hantken Press: Budapest. pp. 129.

[33] Anan, H.S., 1995. Late Eocene Biostratigraphy of Jabals Malaqet and Mundassa of Al Ain region, United Arab Emirates. Revue de Micropaleontologie. 38(1), 3-14.

[34] Haq, B.U., Aubry, M.P., 1978. Early Cenozoic calcareous nannoplankton biostratigraphy and palaeobiogeography of North Africa and the Middle East and Trans-Tethyan correlations. The Geology of Libya. Academic Press: London. pp. 271-304.

[35] Mintz, L.W., 1981. Historical geology, the science of a dynamic earth, 3rd edition, Merrill Publication Company: Princeton. pp. 611.

[36] Rosenbaum, G., Lister, G.S., Duboz, C., 2002. Relative motions of Africa, Iberia and Europe during Alpine orogeny. Tectonophysics. 359(1-2), 117-129.

[37] Aubert, J., Berggren, W.A., 1976. Paleocene benthonic foraminiferal biostratigraphy and paleoecology of Tunisia. Bulletin du Centre de Recherches Pau- SNPA. 10(2), 379-469.

[38] Adams, C.G., Gentry, A.W., Whybrow, P.J., 1983. Dating the terminal Tethys event. Utrecht Micropaleontological Bulletin. 30, 273-298.

[39] Anan, H.S., 2017. Paleontology, paleogeography and paleoenvironment of the Paleocene benthic foraminiferal species of Plummer in the Tethys: A review. Journal of Tethys. 5(3), 272-296.

[40] Abed, A.M., 2013. The eastern Mediterranean phosphorite giants: An interplay between tectonics and upwelling. GeoArabia. 18(2), 67-94.

[41] Anan, H.S., 2011. Paleontology, paleoenvironments, palaeogeography and stratigraphic value of the Maastrichtian-Paleogene and recent foraminiferal species of Anan in the Middle East. Egyptian Journal of Paleontology. 11, 49-78.

[42] Issawi, B., 1999. The Phanerozoic geology of Egypt: A geodynamic approach. Egyptian Geological Survey: Cairo. pp. 1-462.

[43] Nakkady, S.E., 1950. A new foraminiferal fauna from the Esna Shale and Upper Cretaceous chalk of Egypt. Journal of Paleontology. 24(6), 675-692.

[44] LeRoy, L.W., 1953. Biostratigraphy of Maqfi section, Egypt. Geological Society of American Memoir. 54, 1-73.

[45] Berggren, W.A., Aubert, J., 1975. Paleocene benthonic foraminiferal biostratigraphy, paleobiogeography and paleoecology of Atlantic-Tethyan regions: Midway-type fauna. Palaeogeography, Palaeoclimatology, Palaeoecology. 18(2), 73-192.

[46] Hayward, B.W., Kawagata, S., Sabaa, A., et al., 2012. The last global extinction (Mid-Pleistocene) of deep-sea benthic foraminifera (Chrysalogoniidae, Ellipsoidinidae, Glandulonodosariidae, Plectofrondiculariidae, Pleurostomellidae, Stilostomellidae), their Late Cretaceous–Cenozoic history and taxonomy. Cushman Foundation for Foraminiferal Research. 43, 1-408.