Orthophragminids with new axial thickening structures from the Bartonian of the Indian subcontinent
DOI:
https://doi.org/10.1344/GeologicaActa2016.14.3.4Keywords:
Foraminiferida, Orthophragminids, Bulges, Omphaloid test, Indian subcontinentAbstract
The ‘axial thickening’, a morphological character of certain Eocene orthophragminids refers to the thickening of the equatorial and/or lateral layers in axial directions forming radial external structures, namely the ribs. The occurrence of ribs is considered to be a diagnostic specific character of the orthophragminids in the peri-Mediterranean region and Europe (western Tethys). In the Bartonian orthophragminids of the Indian subcontinent we observe a new type of axial thickening that we name ‘bulges’. The bulges are semi-rounded to rounded, localized structures on the test surface formed solely by the greater development of lateral chamberlets. These specimens, with trybliolepidine to umbilicolepidine type embryon configuration, co-occur with ribbed discocyclinids having completely different internal features. We also record another type of axial thickening of the lateral layers in notably small omphaloid tests that are characterized by a thick umbo, deeply depressed at the center such that the periphery of it forms a thick circular structure. The reported omphaloid specimens possess a small, semiisolepidine to nephrolepidine type embryon configuration and characteristic early chambers, not comparable to any known species in the Tethys. These specimens occasionally may have incomplete and/or irregular septula, reminiscent of certain Caribbean orthophragminids. The specimens with bulges, identified in two geographically distant regions of the Indian subcontinent, possibly represent endemic foraminiferal fauna confined to the Indo-Pakistan region. We introduce two new species, Discocyclina kutchensis sp. nov. (characterized by bulges) and ‘D’. sulaimanensis sp. nov. (characterized by circular structures in omphaloid tests). The status of both taxa in the Tethys is discussed.
References
Abbas, G., 1999. Microfacies, depositional environments, diagenesis and porosity development in Limestone horizons of Kirthar Formation (Middle-Late Eocene) in frontal parts of Sulaiman fold belt and adjoining areas, Pakistan. Doctoral Thesis. University of Punjab, Lahore, 112pp.
Afzal, J., Asrar, M.K., Naseer, A.S., 1997. Biostratigraphy of the Kirthar Formation (Middle to Late Eocene), Sulaiman Basin, Pakistan. Pakistan Journal of Hydrocarbon Research, 9, 15-33.
Ben Ismail-Lattrache, K., Özcan, E., Boukhalfa, K., Saraswati, P.K., Soussi, M., Jovane, L., 2013. Early Bartonian orthophragminids (foraminiferida) from Reineche Limestone, north African
platform, Tunisia: taxonomy and paleobiogeographic implications. Geodinamica Acta, 26, 94-121.
Berggren, W.A., Pearson, P.N., 2005. A revised tropical to subtropical Paleogene planktonic foraminiferal zonation. Journal of Foraminiferal Research, 35, 279-298.
Bieda, F., 1963. Duze otwornice eocenu tatrzanskiego.Prace, Instytut Geologiczny, 37, 1-215.
Biswas, S.K., 1992. Tertiary stratigraphy of Kutch. Journal of Palaeontological Society of India, 37, 1-29.
Blanford, W.T., 1879. The Geology of Western Sind. Memoirs of the Geological Survey of India, 17, 1-210.
Brönnimann, P.,1945a. Zur Frage der verwandtschaftlichen Beziehungen zwischen Discocyclina s.s. und Asterocyclina. Eclogae geologicae Helvetiae, 38, 579-615.
Brönnimann, P., 1945b. Zur Morphologie von Aktinocyclina Gümbel, 1868.Eclogae geologicae Helvetiae, 38, 560-578.
Brönnimann, P., 1951. Remarks on the embryonic chambers of Upper Eocene Asterocyclinidae of Trinidad, B.W.I. Eclogae Geologicae Helvetiae, 44, 474-486.
Carter, H.J., 1861. Further observations on the structure of foraminifera and on the larger fossilized forms of Scinde etc., including a new genus and species. Annals and Magazines of
Natural History, 3, 366-382.
Caudri, C.M.B., 1975. Geology and paleontology of Soldado rock, Trinidad (West Indies). Eclogae Geologicae Helvetiae, 68, 533-589.
Caudri, C.M.B., 1996. The larger Foraminifera of Trinidad (West Indies). Eclogae Geologicae Helvetiae, 89, 1137-1309.
Chattoraj, S.L., Sarkar, U, Chakraborty, S., Banerjee, S., Saraswati, P.K., 2012. Facies and Palaeogeography of the Middle Eocene Fulra Limestone, Kutch. Journal Indian Association Sedimentologists, 31, 1-9.
Cole, W.S., Gravell, D.W., 1952. Middle Eocene foraminifera from the Peñon Seep, Matanzas Province, Cuba. Journal of Paleontology, 26, 708-727.
Cushman, J.A., 1917. Orbitoid foraminifera of the genus Orthophragmina from Georgia and Florida. U.S. Geological Survey Professional Paper, 108-G, 115-124.
Cushman, J.A., 1919. Fossil foraminifera from the West Indies.Washington, D.C., Carnegie Institution Publication, 291, 21-71.
Eames, F.E., 1952a. A contribution to the study of the Eocene in western Pakistan and western India: A. The geology of standard sections in the western Punjab and in the Kohat district. Quarterly Journal of the Geological Society, 107, 159-171.
Eames, F.E., 1952b. A contribution to the study of the Eocene in western Pakistan and western India: D. Discussion of the faunas of the certain standard sections, and their bearing on the classification and correlation of the Eocene in western Pakistan and western India. Quarterly Journal of the Geological Society, 107, 173-200.
Eichwald, E., 1830. Naturhistorische Skizze von Lithauen, Volhynien und Podolien in Geognostisch-Mineralogischer, Botanischer und Zoologischer Hinsicht, Wilna Zawadzki, 256pp.
Ferràndez-Cañadell, C., 1997. A new, ribbed species of Nemkovella Less, 1987 (Discocyclinidae), and discussion on the genus Actinocyclina Gümbel, 1870. Journal of Foraminiferal Research, 27, 175-185.
Ferràndez-Cañadell, C., 1998. Morphostructure and paleobiology of Mesogean orthophragminids (Discocyclinidae and Orbitoclypeidae, Foraminifera). Acta Geologica Hispanica, 31(1-3), 183-187.
Ferràndez-Cañadell, C., Serra-Kiel, J., 1992. Morphostructure and paleobiology of Discocyclina Gümbel, 1870. Journal of Foraminiferal Research, 22,147-165.
Fritsch, K., 1875. Einige eocäne Foraminiferen von Borneo. Palaeontographica, 3, 139-146.
Galloway, J.J., 1928. A revision of the family Orbitoididae. Journal of Paleontology, 2, 45-69.
Gümbel, C.W., 1870. Beiträge zur foraminiferenfauna der nordalpinen Eozängebilde oder der kressenberger Nummuliten Schisten. Abhandlungen der MatematischPhysikalischen Classe der Königlich Bayerischen Akademie der Wissenschaften, 10, 581-720.
Hemphill, W.R., Kidwai, A.H., 1973. Stratigraphy of the Bannu and Dera İsmail Khan Areas, Pakistan. U.S. Geological Survey Professional Paper, 716-B, 1-36.
Kazmi, A.H., Rana, R.A., 1982. Tectonic map of Pakistan, 1: 2000000. Quetta, Geological Survey of Pakistan.
Kazmi, A.H., Abbasi, I.A., 2008. Stratigraphy and Historical geology of Pakistan. Department of Geology and National Centre of Excellence in Geology, University of Peshawar, 524pp.
Köthe, A., Khan, A.A., Ashraf, M., 1988. Biostratigraphy of the Surghar Range, Salt Range, Sulaiman Range and the Kohat area, Pakistan, according to Jurassic through Paleogene calcareous nannofossils and Paleogene dinoflagellates. Geologisches Jahrbuch, B71, 1-87.
Less, Gy., 1987. Paleontology and stratigraphy of the European Orthophragminae. Geologica Hungarica series Palaeontologica, 51, 1-373.
Michelin, H., 1846. Iconographie zoophytologique. Paris, Bertrand, 348pp.
Mukhopadhyay, S.K., 2003. Earliest Pellatispira Boussac from the middle Eocene of India: morphological speciality of the ancestral stock. Journal of Asian Earth Sciences, 22, 209-225.
Nuttall, W.L.F., 1926. The zonal distribution and description of the larger foraminifera of the Middle and Lower Kirthar series (Middle Eocene) of parts of Western India. Records of the Geological Survey of India, 59, 115-164.
Özcan, E., Saraswati, P.K., 2014. Late Middle Eocene (Bartonian) orthophragminids from Fulra Limestone, Kutch Basin (western India): regional implications and their correlation to well-known assemblages in western Tethys (north Africa, Europe and Turkey). Earth Sciences Pakistan, Baragali Summer Campus, University of Peshawar, Journal of Himalayan Earth Sciences, abstract volume, 102.
Özcan, E., Less, Gy., Báldi-Beke, M., Kollányi, K.,Kertesz, B., 2006. Biometric analysis of middle and upper Eocene Discocyclinidae and Orbitoclypeidae (Foraminifera) from Turkey and updated orthophragmine Zonation in the Western Tethys. Micropaleontology, 52, 485-520.
Özcan, E., Less, Gy., Okay, A.I., Báldi-Beke, M., Kollányi, K., Yılmaz, İ.Ö., 2010. Stratigraphy and larger foraminifera of the Eocene shallow-marine and olistostromal units of the southern part of the Thrace Basin, NW Turkey. Turkish Journal of Earth Sciences, 19, 27-77.
Portnaya, V.L., 1974. Discocyclinids from the Eocene deposits of the Crimea and their biostratigraphic significance (in Russian). Moscow, Moscow State University, 175pp.
Punekar, J., Saraswati, P.K., 2010. Age of the Vastan lignite in context of some oldest Cenozoic fossil mammals from India. Journal of the Geological Society of India, 76, 63-68.
Samanta, B.K., 1964. The occurrence of Indo-Pacific Discocyclina in eastern India. Micropaleontology, 10, 339-353.
Samanta, B.K., 1965. Discocyclina from the Upper Eocene of Assam, India. Micropaleontology, 11, 415-430.
Samanta, B.K., 1970. Middle Eocene planktonic foraminifera from Lakhpat, Cutch, western India. Micropaleontology, 16, 185-215.
Samanta, B.K., 1973. Planktonic foraminifera from the Palaeocene-Eocene succession in the Rakhi Nala, Sulaiman Range, Pakistan. Bulletin of the British Museum (Natural History), 22, 421-482.
Samanta, B.K., 1993. Foraminiferal genus Alveolina d’Orbigny from the Middle Eocene Fulra Limestone of Kutch, Gujarat, Western India with observations on the distribution of the genus in the Indo-Pacific region. The Geological, Mining & Metallurgical Society of India, 57, 1-92.
Samanta, B.K., Lahiri, A., 1985. The occurrence of Discocyclina Gümbel in the middle Eocene Fulra limestone of Cutch, Gujarat, Western India, with notes on species reported from the Indian region. Bulletin Geological Mining Metallurgical Society of India, 52, 211-295.
Samanta, B.K., Bandopadhyay, K.P., Lahiri, A., 1990. The occurrence of Nummulites Lamarck (Foraminiferida) in the Middle Eocene Harudi Formation and Fulra Limestone of Cutch, Gujarat, Western India. Bulletin Geological Mining Metallurgical Society of India, 55, 1-66.
Saraswati, P.K., Patra, P.K., Banerjee, R.K., 2000. Biometric study of some Eocene Nummulites from Kutch and Jaisalmer, India.Journal of Palaeontological Society of India, 45, 91-122.
Schweighauser, J., 1953. Mikropalaontologische und stratigraphische Untersuchungen im Paleocaen und Eocaen des Vicentin (Nord Italien). Schweizerische Paläontologische Abhandlungen,70, 1-92.
Sen Gupta, B.K., 1959. Zones of the Paleogene of Lakhpat, northwestern Kutch, India. Micropaleontology, 5, 365-368.
Sen Gupta, B.K., 1963a. A restudy of two common species of Discocyclina from India. Micropaleontology, 9, 39-49.
Sen Gupta, B.K., 1963b. Structure of Asterocyclina alticostata (Nuttall). Contributions from the Cushman Foundation for Foraminiferal Research, 14, 95-98.
Serra-Kiel, J., Hottinger, L., Caus, E., Drobne, K., Ferràndez, C., Jauhri, A.K., Less, Gy., Pavlovec, R., Pignatti, J., Samso, J.M., Schaub, H., Sirel, E., Strougo, A., Tambareau, Y., Tosquella, J., Zakrevskaya, E., 1998. Larger foraminiferal biostratigraphy of the Tethyan Paleocene and Eocene. Bulletin de la Societé géologique de France, 169, 281-299.
Shah, S.M.I., 2009. Stratigraphy of Pakistan.Geological Survey of Pakistan Memoirs, 22, 381pp.
Silvestri, A., 1907. Fossili Dordoniani nei dintorni di TerminiImerese (Palermo). Atti Della Pontifica Accademia Romana dei Nuovi Lincei, LX, 105-110.
Sudhakar, R.,Basu, D.N., 1973. A reappraisal of the Palaeogene stratigraphy of southern Cambay Basin. Bulletin Oil and Natural Gas Commission, 10, 55-76.
Tewari, B.S., 1949. On a stellate Discocycline from the Upper Eocene of Surat-Broach area (Bombay Presidency). Current Science, 18, 401.
Vaughan, T.W., 1929. Descriptions of the new species of foraminifera of the genus Discocyclina from the Eocene of Mexico. U.S. National Museum proceedings, 76, 1-18.
Vaughan, T.W., Cole, W.S., 1941. Preliminary report on the Cretaceous and Tertiary larger Foraminifera of Trinidad British West Indies. Geological Society of America special papers, 30, 1-137.
Weiss, W., 1993. Age assignment of larger foraminiferal assemblages of Maastrichtian to Eocene age in Northern Pakistan. Zitteliana, 20, 223-252.
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