Belemnites of the family Belemnitellidae Pavlow, 1914 from the Late Cretaceous Maastrichtian stage in the Northern Hemisphere
Abstract
The currently defined Global Stratotype Section and Point for the Campanian/Maastrichtian boundary at Tercis (France) lacks any belemnite record. However, the detailed correlation of Tercis with the Kronsmoor section in northern Germany has enabled recognising this boundary in terms of belemnite stratigraphy close to the first appearance datum (FAD) of Belemnella obtusa Schulz, 1979. Originally, the FAD of the genus Belemnella Nowak, 1913 (e.g. of Belemnella lanceolata (von Schlotheim, 1813)) has been widely used for defining the base of the traditionally understood Maastrichtian stage in the Boreal Realm. Belemnella appeared almost contemporaneously across a significant portion of epicontinental Europe in what is now considered topmost Campanian and dominated the lower Maastrichtian belemnite assemblages, co-occurring with Belemnitella d’Orbigny, 1840 and rare Fusiteuthis Kongiel, 1962. It disappeared in Western and Central Europe during the mid-Maastrichtian, and as a consequence, the FAD of Belemnitella junior Nowak, 1913 served as a biomarker defining the base of the upper Maastrichtian substage. It is only at the end of the Maastrichtian that the genus Neobelemnella Naidin, 1975 became abundant, replacing Belemnitella steadily from the east to the west as the dominating species. The factors underlying those remarkable shifts in belemnite assemblages remain uncertain, but various environmental elements, especially water depth and temperature, in addition ocean currents, and oceanic chemical composition are considered influential.
References
Baraboshkin, E.Y., Guzhikov, A.Y., Aleksandrova, G.N., Akinin, V.V., Ryabov, I.P., Ustinova, M.A., Rtischev, N.A. & Vishnevskaya, V.S., 2024. Reference section of the Campanian stage of the Southwestern Crimea: problems of substage subdivision and global correlation. Stratigraphy and Geological Correlation 32(2): 89–143. DOI: 10.1134/S0869593824020023.
Baraboshkin, E.Y., Guzhikov, A.Y., Aleksandrova, G.N., Fomin, V.A., Pokrovskiy, B.G., Grishchenko, V.A., Manikin, A.G. & Naumov, E.V., 2021. New sedimentological, magnetostratigraphic, and biostratigraphic data on the Campanian-Maastrichtian of Beshkosh Mountain, Southwest Crimea. Stratigraphy and Geological Correlation 28(8): 816–858. DOI: 10.1134/S0869593820060040.
Bayle, E., 1878. Fossiles principaux des terrains de la France. Explication de la Carte Geologique de la France 4(1): Atlas. 79 pls.
Boussaha, M., Thibault, N. & Stemmerik, L., 2016. Integrated stratigraphy of the late Campanian-Maastrichtian in the Danish Basin: Revision of the Boreal calcareous nannofossil zonation. Newsletters on Stratigraphy 49(2): 337–360. DOI: 10.1127/nos/2016/0075.
Bramlette, M.N. & Martini, E., 1964. The great change in calcareous nannoplankton fossils between Maestrichtian and Danian. Micropaleontology 10(3): 291–322.
Christensen, W.K., 1975. Upper Cretaceous belemnites from the Kristianstad area in Scania. Fossils and Strata 7: 1–69.
Christensen, W.K., 1995. Belemnitella from the Upper Campanian and Lower Maastrichtian chalk of Norfolk. England. Special Papers in Palaeontology 51: 84.
Christensen, W.K., 1997a. Palaeobiogeography and migration in the Late Cretaceous belemnite family Belemnitellidae. Acta Palaeontologica Polonica 42(4): 451–495.
Christensen, W.K., 1997b. The Late Cretaceous belemnite family Belemnitellidae: Taxonomy and evolutionary history. Bulletin of the Geological Society of Denmark 44: 59–88.
Christensen, W.K., 1998. Belemnitella from the lowermost Maastrichtian of Scania, southern Sweden. Bulletin of the Geological Society of Denmark 45: 11–21.
Christensen, W.K., 1999. Upper Campanian and Lower Maastrichtian belemnites from the Mons Basin. Belgium. Bulletin de l’Institut royal des Sciences Naturelles de Belgique 69: 97–131.
Christensen, W.K., 2000. Belemnitella schulzi sp. nov. from the uppermost Campanian and lowest Maastrichtian chalks of northwest Germany and Denmark. Acta Geologica Polonica 50(1): 55–66.
Christensen, W.K., 2002. Fusiteuthis polonica, a rare and unusual belemnite from the Maastrichtian. Acta Palaeontologica Polonica 47(4): 679–683.
Christensen, W.K., Schmid, F. & Schulz, M.-G., 2004. Belemnitella from the Upper Maastrichtian of Hemmoor, Northwest Germany. Geologisches Jahrbuch A157: 23–67.
Dubicka, Z. & Peryt, D., 2011. Integrated biostratigraphy of Upper Maastrichtian chalk at Chełm (SE Poland). Annales Societatis Geologorum Poloniae 81: 185–197.
Dubicka, Z. & Peryt, D., 2012. Latest Campanian and Maastrichtian palaeoenvironmental changes: implications from an epicontinental sea (SE Poland and western Ukraine). Cretaceous Research 37: 272–284.
Dubicka, Z., Wierny, W., Bojanowski, M.J., Rakociński, M., Walaszczyk, I. & Thibault, N., 2023. Multi-proxy record of the mid-Maastrichtian event in the European Chalk Sea: paleoceanographic implications. Gondwana Research 129: 1–22. DOI: 10.1016/j.gr.2023.11.010.
Felder, P.J. & Bless, M.J.M., 1994. The Vijlen Chalk (early Early to early Late Maastrichtian) in its type area around Vijlen and Mamelis (southern Limburg, The Netherlands). Annales de la Société géologique de Belgique 116: 61–85.
Górka, H., 1957. Les Coccolithophoridés du Maestrichtien supérieur de Pologne. Acta Palaeontologica Polonica 2: 239–284.
Haq, B.U., 2014. Cretaceous eustasy revisited. Global and Planetary Change 113: 44–58.
Hoffmann, R. & Stevens, K., 2020. The palaeobiology of belemnites – foundation for the interpretation of rostrum geochemistry. Biological Reviews 95(1): 94–123. DOI: 10.1111/brv.12557.PubMed
Jagt, J.W.M. & Jagt-Yazykova, E.A., 2012. Stratigraphy of the type Maastrichtian - a synthesis, Fossils of the type Maastrichtian (Part 1). In: Jagt, J.W.M., Donovan, S.K. & Jagt-Yazykova, E.A. (eds): Scripta Geologica Special Issue. vol. 8, p. 5–32.
Jeletzky, J.A., 1941. Über die Systematik und die Phylogenie der Belemniten der Oberen Kreide. Doklady Akademii Nauk SSSR 2: 23–30, (in Ukrainian and German).
Jeletzky, J.A., 1948. Zur Kenntnis der Oberkreide der Dnjepr-Donetz-Senke und zum Vergleich der russischen borealen Oberkreide mit derjenigen Polens und Nordwesteuropas. Geologiska Föreningen i Stockholm Förhandlingar 70(4): 583–602. DOI: 10.1080/11035894809445154.
Jeletzky, J.A., 1949. Über den taxonomischen Wert einiger morphologische Elemente des Rostrums der belemnitellenartigen Formen (Familie Belemnitellidae Pavlow, 1913), sowie über die Gattung Belemnella (Nowak, 1913, subg.) Jeletzky, 1941, ihre Phylogenie und einige Vertreter. Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, Monatshefte 9: 257–287.
Jeletzky, J.A., 1962. Cretaceous belemnites of New Jersey. In: Richards, H.G. & Ramsdell, R.C. (eds): The Cretaceous Fossils of New Jersey. Paleontology Series, State of New Jersey, Department of Conservation and Economic: Development, 139–161.
Kennedy, W.J., Landman, N.H., Christensen, W.K., Cobban, W.A. & Hancock, J.M., 1998. Marine connections in North America during the late Maastrichtian: palaeogeographic and palaeobiogeographic significance of Jeletzkytes nebrascensis Zone cephalopod fauna from the Elk Butte Member of the Pierre Shale. SE South Dakota and NE Nebraska. Cretaceous Research 19: 745–775.
Keutgen, N., 1997. Belemnella (Belemnella) cf. praearkhangelskii Naidin, 1964 from the Vijlen Member at Altembroeck (NE Belgium, Early Maastrichtian). Geologie en Mijnbouw 75: 341–347.
Keutgen, N., 2018. A bioclast-based astronomical timescale for the Maastrichtian in the type area (southeast Netherlands, northeast Belgium) and stratigraphic implications: the legacy of P.J. Felder. Netherlands Journal of Geosciences 97(4): 229–260. DOI: 10.1017/njg.2018.15.
Keutgen, N., Jagt, J.W.M., Felder, P.J. & Yazykova, E., 2010. Stratigraphy of the upper Vijlen Member (Gulpen Formation; Maastrichtian) in northeast Belgium, the southeast Netherlands and the Aachen area (Germany), with special reference to belemnitellid cephalopods. Netherlands Journal of Geosciences 89(2): 109–136. DOI: 10.1017/S0016774600000731.
Keutgen, N. & Keutgen, A.J., 2020. Belemnites of the Neobelemnella kazimiroviensis group – a comparison of the self-organizing Kohonen networks algorithm with the classic palaeopopulation statistical approach and approaching their origin. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 295(1): 23–51. DOI: 10.1127/njgpa/2020/0866.
Keutgen, N., Remin, Z. & Jagt, J.W.M., 2017. The late Maastrichtian Belemnella kazimiroviensis group (Cephalopoda, Coleoidea) in the Middle Vistula valley (Poland) and the Maastricht area (the Netherlands, Belgium) – taxonomy and palaeobiological implications. Palaeontologia Electronica 20(2.38A): 1–29. DOI: 10.26879/671.
Keutgen, N., Remin, Z. & Walaszczyk, I.P., 2012. Early representatives of the belemnite genus Belemnella (Cephalopoda) from the uppermost Campanian-Lower Maastrichtian of the Middle Vistula River section, central Poland. Acta Geologica Polonica 62(4): 535–559. DOI: 10.2478/v10263-012-0029-4.
Keutgen, N. & Van der Tuuk, L.A., 1991. Belemnites from the Lower Maastrichtian of Limburg, Aachen and Liège. Mededelingen van de Rijks Geologische Dienst 44: 1–39, 4 pls. 1990.
Kongiel, R., 1962. On belemnites from the Maastrichtian, Campanian and Santonian sediments in the Middle Vistula valley (Central Poland). Prace Muzeum Ziemi 5: 148.
Kopun, J., Castro, C., Garb, M.P., Larina, E. & Remin, Z. Taphonomic analysis of a Late Cretaceous oyster bed at the top of the Mount Laurel Formation in Monmouth country New Jersey: Long term hiatal concentration, storm deposit or tsunami? In: 2012 GSA Annual Meeting & Exposition, 4th to 7th November, Charlotte, North Carolina, USA, 2012. https://gsa.confex.com/gsa/2012AM/webprogram/Paper210591.html
Landman, N. H., Remin, Z., Garb, M.P. & Chamberlain, J.A, 2013. Cephalopods from the Badlands National Park area, South Dakota: Reassessment of the position of the Cretaceous/Paleogene boundary. Cretaceous Research 42: 1–27.
Larson, N.L. Fossil Coleoids from the Late Cretaceous (Campanian & Maastrichtian) of the Western Interior. In: Proceedings of the 3rd International Symposium Coleoid Cephalopods Through Time. Ferrantia 59, 2010, 78–113.
Linnert, C., Robinson, S.A., Lees, J.A., Bown, P.R., Pérez-Rodríguez, I., Petrizzo, M.R., Falzoni, F., Littler, K., Arz, J.A. & Russell, E.E., 2014. Evidence for global cooling in the Late Cretaceous. Nature Communications 5(1): 4194. DOI: 10.1038/ncomms5194.PubMed
Linnert, C., Engelke, J., Wilmsen, M. & Mutterlose, J., 2016. The impact of the Maastrichtian cooling on the marine nutrient regime – Evidence from midlatitudinal calcareous nannofossils. Paleoceanography 31(6): 694–714. DOI: 10.1002/2015PA002916.
Linnert, C., Engelke, J., Wilmsen, M. & Mutterlose, J., 2019. Environmental footprints of the early Maastrichtian cooling – The record of benthic foraminifera from northern Germany. Cretaceous Research 97: 143–159. DOI: 10.1016/j.cretres.2019.01.014.
Machalski, M., 1996. Scaphitid ammonite correlation of the Late Maastrichtian deposits in Poland and Denmark. Acta Palaeontologica Polonica 41(4): 369–383.
Meek, F.B. & Hayden, F.V., 1857. Descriptions of new species of Gastropoda and Cephalopoda from the Cretaceous formations of Nebraska Territory. Proceedings of the Academy of Natural Sciences of Philadelphia, 8 (for 1856): 70–72.
Morton, S.G., 1830. Synopsis of the organic remains of the Ferruginous Sand Formation of the United States, with geological remarks. American Journal of Science and Arts 17: 274–295.
Naidin, D.P., 1952. Verkhnemelovye belemnity zapadnoj Ukrainy. Trudy Moskovskogo Geologo-Razvedochnogo Instituta imemi S. Ordzhinikidze 27: 1–126.
Naidin, D.P., 1964a. Verkhnemelovye belemnitelly i belemnelly Russkoj platform i nekotorykh sopredel’nykh oblastej. Byulleten’ Moskovskogo Obshchestva Ispytatelej Prirody, Otdel geologicheskii 39: 85–97, (in Russian).
Naidin, D.P., 1964b. Upper Cretaceous belemnites from the Russian Platform and adjacent areas. Actinocamax, Gonioteuthis, Belemnellocamax. Izdatelstvo Moskovskogo Gosudarstvennogo Universiteta, Moscow. Byulleten’ Moskovskogo Obshchestva Ispytatelei Prirody 38(3): 151, (1963).
Naidin, D.P., 1973. On biostratigraphical and palaeobiogeographical relation of lowest groups subdivision. Byulleten Moskovskogo Obshchestva Ispytatelei Prirody Otdel Geologicheskii 48: 50–63, (in Russian).
Naidin, D.P., 1974. Subclass Endocochlia – Order Belemnitidae. In: Krumgol’ts, G.Ya (ed): Atlas of the Upper Cretaceous fauna of Donbas. Moscov (Nedra): 197–240.
Naidin, D.P., 1975. Late Maastrichtian belemnitellids of Eurasia. In: Menner, W.W., Moskvin, M.M., Naidin, D.P., Solovyev, A.N. & Shimansky, V.N. (eds): Evolution and change of the organic kingdom at the Mesozoic-Cainozoic boundary, Nauka (Moskva): 91–108.
Niebuhr, B., Hampton, M.J., Gallagher, L.T. & Remin, Z., 2011. Integrated stratigraphy of the Kronsmoor section (northern Germany), a reference point for the base of the Maastrichtian in the Boreal Realm. Acta Geologica Polonica 61(2): 193–214.
Nowak, J., 1913. Untersuchungen über die Cephalopden der oberen Kreide in Polen. III Teil. Bulletin de l’Académie des Sciences de Cracovie. Classe des Sciences Mathématique et Naturelles. Série B. Sciences Naturelles, for 1913, pp. 335–415.
Odin, G.S. & Lamaurelle, M.A., 2001. The global Campanian-Maastrichtian stage boundary. Episodes 24(4): 229–238.
Orbigny, A.d’, 1840. Paléontologie française. Terrains Crétacés (Paris), pp. 642. Paris.
Perch-Nielsen, K., 1973. Neue Coccolithen aus dem Maastrichtien von Dänemark, Madagaskar und Ägypten. Bulletin of the Geological Society of Denmark 22: 306–333.
Peryt, D., Dubicka, Z. & Wierny, W., 2022. Planktonic foraminiferal biostratigraphy of the Upper Cretaceous of the Central European Basin. Geosciences 12(1): 22. DOI: 10.3390/geosciences12010022.
Remin, Z. Fusiteuthis polonica - an intergeneric belemnite hybrid – discussion. In: Conference paper. IS Cephalopods Present & Past, 30th August – 3rd September 2010, Dijon, France. https://www.researchgate.net/profile/Zbyszek-Remin/publication/260225350_Fusiteuthis_polonica_-_an_intergeneric_belemnite_hybrid_-_discussion/links/02e7e53035105b18a6000000/Fusiteuthis-polonica-an-intergeneric-belemnite-hybrid-discussion.pdf?_sg%5B0%5D=7y4BQgRa4QtgCxfpisQ-fx4gwfn24rTsGvDFq7o1y_vxI_fcZIIStwlx0OXMXwJrGDHBtr7jjaNWQMtxGynMTLTMH2HSliqd5Bc.zlOE7_r3ZUgLmzMz1oxpUPY2cD_atwFgSVKKzb-j3k2P25cvQfPnQceYUidJ5MEme6lcGz1CubNh78UVzxFZRw&origin=profileContributionsPublicationsListItem&_rtd=e30%3D&_tp=eyJjb250ZXh0Ijp7ImZpcnN0UGFnZSI6InB1YmxpY2F0aW9uIiwicGFnZSI6InByb2ZpbGUiLCJwcmV2aW91c1BhZ2UiOiJwcm9maWxlIiwicG9zaXRpb24iOiJwYWdlQ29udGVudCJ9fQ, 2010.
Remin, Z., 2012. The Belemnella stratigraphy of the Campanian-Maastrichtian boundary: a new methodological and taxonomic approach. Acta Geologica Polonica 62: 495–533.
Remin, Z., 2015. The Belemnitella stratigraphy of the Upper Campanian-basal Maastrichtian of the Middle Vistula section, central Poland. Geological Quarterly 59(4): 783–813. DOI: 10.7306/gq.1257.
Remin, Z., 2018. Understanding coleoid migration patterns between eastern and western Europe-belemnite faunas from the upper lower Maastrichtian of Hrebenne, southeast Poland. Cretaceous Research 87: 368–384. DOI: 10.1016/j.cretres.2017.06.010.
Remin, Z., Cyglicki, M. & Niechwedowicz, M., 2022a. Deep vs. shallow – two contrasting theories? A tectonically activated Late Cretaceous deltaic system in the axial part of the Mid-Polish Trough: a case study from southeast Poland. Solid Earth 13(3): 681–703.
Remin, Z., Krzywiec, P. & Stachowska, A., 2022b. Late Cretaceous inversion of SE Polish Basin – syn-depositional tectonics, facies distribution and bathymetric changes. In: Walaszczyk, I. & Todes, J. (eds): Cretaceous of Poland and of adjacent areas. Field trip Guides. Faculty of Geology, University of Warsaw (Warsaw): 87–114.
Schulz, M.-G., 1979. Morphometrisch-variationsstatistische Untersuchungen zur Phylogenie der Belemniten-Gattung Belemnella im Untermaastricht NW Europas. Geologisches Jahrbuch A47: 3–157.
Schulz, M.-G., 1982. Erster Nachweis der Belemnitengattung Belemnitella (B. pulchra n. sp.) im mittleren Untermaastricht NW-Deutschlands. Geologisches Jahrbuch A61: 279–293.
Skołozdrówna, Z., 1932. Znaczenie alveoli i szczeliny alveolarnej dla systematyki rodzaju Belemnitella . Posiedzenia Naukowe, Państwowego Instytutu Geologicznego 32: 117.
Sugarman, P.J., Kenneth, G.M., Bukry, G. & Feigenson, M.D., 1995. Uppermost Campanian-Maestrichtian strontium isotopic, biostratigraphic, and sequence stratigraphic framework of the New Jersey Coastal Plain. GSA Bulletin 107(1): 19–37.2.3.CO;2>
Thibault, N., 2016. Calcareous nannofossil biostratigraphy and turnover dynamics in the late Campanian-Maastrichtian of the tropical South Atlantic. Revue de micropaléontologie 59: 57–69.
Thibault, N., Anderskouv, K., Bjerager, M., Boldreel, L.O., Jelby, M.E., Stemmerik, L. & Surlyk, F., 2015. Upper Campanian-Maastrichtian chronostratigraphy of the Skælskør-1 core, Denmark: correlation at the basinal and global scale and implications for changes in seasurface temperatures. Lethaia 48(4): 549–560. DOI: 10.1111/let.12128.
Thibault, N., Harlou, R., Schovsbo, N., Schiøler, P., Minoletti, F., Galbrun, B., Lauridsen, B.W., Sheldon, E., Stemmerik, L. & Surlyk, F., 2012. Upper Campanian-Maastrichtian nannofossil biostratigraphy and high-resolution carbon-isotope stratigraphy of the Danish Basin: Towards a standard δ13C curve for the Boreal Realm. Cretaceous Research 33(1): 72–90.
Thibault, N., Harlou, R., Schovsbo, N.H., Stemmerik, L. & Surlyk, F., 2016. Late Cretaceous (late Campanian-Maastrichtian) sea-surface temperature record of the Boreal Chalk Sea. Climate of the Past 12(1): 1–10. DOI: 10.5194/cp-12-1-2016.
Vellekoop, J., Kaskes, P., Sinnesael, M., Huygh, J., Déhais, T., Jagt, J.W.M., Speijer, R.P. & Claeys, P., 2022. A new age model and chemostratigraphic framework for the Maastrichtian type area (southeastern Netherlands, northeastern Belgium). Newsletters on Stratigraphy 55(4): 479–501. DOI: 10.1127/nos/2022/0703.
Voigt, S., Gale, A.S., Jung, C. & Jenkyns, H.C., 2012. Global correlation of Upper Campanian – Maastrichtian successions using carbon-isotope stratigraphy: development of a new Maastrichtian timescale. Newsletters on Stratigraphy 45(1): 25–53. DOI: 10.1127/0078-0421/2012/0016.
Voigt, S. & Schönfeld, J., 2010. Cyclostratigraphy of the reference section for the Cretaceous white chalk of northern Germany, Lägerdorf-Kronsmoor: A late Campanian-early Maastrichtian orbital time scale. Palaeogeography, Palaeoclimatology, Palaeoecology 287(1-4): 67–80. DOI: 10.1016/j.palaeo.2010.01.017.
Vonhof, H.B., Jagt, J.W.M., Immenhauser, A., Smit, J., Van den Berg, Y., Saher, M., Keutgen, N. & Reijmer, J.J.G., 2011. Belemnite-based strontium carbon and oxygen isotope stratigraphy of the Maastrichtian stratotype area. In: Jagt, J.W.M., Jagt-Yazykova, E.A. & Schins, W.J.H. (eds): A tribute to the late Felder brothers – pioneers of Limburg geology and prehistoric archaeology. Netherlands Journal of Geosciences / Geologie en Mijnbouw, vol. 90, pp. 259–270. DOI: 10.1017/S0016774600001141.
Von Schlotheim, E.F., 1813. Beiträge zur Naturgeschichte der Versteinerungen in geognostischer Hinsicht. In: Leonhard, C.C. (ed): Leonhard’s Taschenbuch für die gesamte Mineralogie mit Hinsicht auf die neuesten Entdeckungen. vol. 1)7, pp. 1–134.
Whitfield, R.P., 1892. Gastropoda and Cephalopoda of the Raritan Clays and Greensand Marls of New Jersey. United States Geological Survey, Monograph 18: 1–402.
Wiese, F., Košták, M. & Wood, C.J., 2009. The Upper Cretaceous belemnite Praeactinocamax plenus (Blainville, 1827) from Lower Saxony (Upper Cenomanian, northwest Germany) and its distribution pattern in Europe. Paläontologische Zeitschrift 83(2): 309–332. DOI: 10.1007/s12542-009-0022-8.
Wilmsen, M., Engelke, J., Linnert, C., Mutterlose, J. & Niebuhr, B., 2019. A Boreal reference section revisited (Kronsmoor, northern Germany): high-resolution stratigraphic calibration of the Campanian-Maastrichtian boundary interval (Upper Cretaceous). Newsletters on Stratigraphy 2(2): 155–172. DOI: 10.1127/nos/2018/0473.
Wilmsen, M. & Niebuhr, B., 2017. High-resolution Campanian-Maastrichtian carbon and oxygen stable isotopes of bulk-rock and skeletal components: palaeoceanographic and palaeoenvironmental implications for the Boreal shelf sea. Acta Geologica Polonica 67(1): 47–74. DOI: 10.1515/agp-2017-0004.
Zakharov, Y.D., Melnikov, M.E., Popov, A.M., Pletnev, S.P., Khudik, V.D. & Punina, T.A., 2012. Cephalopod and brachiopod fossils from the Pacific: Evidence from the Upper Cretaceous of the Magellan Seamounts. Geobios 45(1): 145–156.
Zakharov, Y.D., Pletnev, S.P., Melnikov, M.E., Smyshlyaeva, O.P., Khudik, V.D., Evseev, G.A., Punina, T.A. & Popov, A.M., 2007. The first finds of Cretaceous belemnites from the Magellan Rise, Pacific Ocean. Russian Journal of Pacific Geology 1(1): 29–41.
Zakharov, Y.D., Tanabe, K., Safronov, P.P. & Smyshlyaeva, O.P., 2014. New data on microstructure and isotopic composition of some cephalopods from the Upper Cretaceous of North America and Europe: significance for oxygen isotope palaeotemperature measurements. Denisia 32: 113–132.

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